docs: mirror README (guard rules + sync procedure + incident record)

* Consolidate dependency updates in CHANGELOG

Removed specific dependency updates and consolidated them into a single entry.

* Fix capitalization in v7.0.1 changelog entries

Updated changelog entries for v7.0.1 to use consistent capitalization.

.eslintignore

@@ -1,3 +0,0 @@
-dist/
-lib/
-node_modules/

.eslintrc.json

@@ -1,53 +0,0 @@
-{
-  "plugins": ["jest", "@typescript-eslint"],
-  "extends": ["plugin:github/recommended"],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "ecmaVersion": 9,
-    "sourceType": "module",
-    "project": "./tsconfig.json"
-  },
-  "rules": {
-    "eslint-comments/no-use": "off",
-    "import/no-namespace": "off",
-    "no-unused-vars": "off",
-    "@typescript-eslint/no-unused-vars": "error",
-    "@typescript-eslint/explicit-member-accessibility": ["error", {"accessibility": "no-public"}],
-    "@typescript-eslint/no-require-imports": "error",
-    "@typescript-eslint/array-type": "error",
-    "@typescript-eslint/await-thenable": "error",
-    "camelcase": "off",
-    "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
-    "@typescript-eslint/func-call-spacing": ["error", "never"],
-    "@typescript-eslint/no-array-constructor": "error",
-    "@typescript-eslint/no-empty-interface": "error",
-    "@typescript-eslint/no-explicit-any": "error",
-    "@typescript-eslint/no-extraneous-class": "error",
-    "@typescript-eslint/no-floating-promises": "error",
-    "@typescript-eslint/no-for-in-array": "error",
-    "@typescript-eslint/no-inferrable-types": "error",
-    "@typescript-eslint/no-misused-new": "error",
-    "@typescript-eslint/no-namespace": "error",
-    "@typescript-eslint/no-non-null-assertion": "warn",
-    "@typescript-eslint/no-unnecessary-qualifier": "error",
-    "@typescript-eslint/no-unnecessary-type-assertion": "error",
-    "@typescript-eslint/no-useless-constructor": "error",
-    "@typescript-eslint/no-var-requires": "error",
-    "@typescript-eslint/prefer-for-of": "warn",
-    "@typescript-eslint/prefer-function-type": "warn",
-    "@typescript-eslint/prefer-includes": "error",
-    "@typescript-eslint/prefer-string-starts-ends-with": "error",
-    "@typescript-eslint/promise-function-async": "error",
-    "@typescript-eslint/require-array-sort-compare": "error",
-    "@typescript-eslint/restrict-plus-operands": "error",
-    "semi": "off",
-    "@typescript-eslint/semi": ["error", "never"],
-    "@typescript-eslint/type-annotation-spacing": "error",
-    "@typescript-eslint/unbound-method": "error"
-  },
-  "env": {
-    "node": true,
-    "es6": true,
-    "jest/globals": true
-  }
-}

.github/workflows/check-dist.yml

@@ -1,51 +0,0 @@
-# `dist/index.js` is a special file in Actions.
-# When you reference an action with `uses:` in a workflow,
-# `index.js` is the code that will run.
-# For our project, we generate this file through a build process
-# from other source files.
-# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
-name: Check dist
-
-on:
-  push:
-    branches:
-      - main
-    paths-ignore:
-      - '**.md'
-  pull_request:
-    paths-ignore:
-      - '**.md'
-  workflow_dispatch:
-
-jobs:
-  check-dist:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set Node.js 24.x
-        uses: actions/setup-node@v4
-        with:
-          node-version: 24.x
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Rebuild the index.js file
-        run: npm run build
-
-      - name: Compare the expected and actual dist/ directories
-        run: |
-          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
-            echo "Detected uncommitted changes after build.  See status below:"
-            git diff
-            exit 1
-          fi
-
-      # If dist/ was different than expected, upload the expected version as an artifact
-      - uses: actions/upload-artifact@v4
-        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
-        with:
-          name: dist
-          path: dist/

.github/workflows/codeql-analysis.yml

@@ -1,58 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ main ]
-  schedule:
-    - cron: '28 9 * * 0'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'javascript' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
-        # Learn more:
-        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v6
-
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    - run: npm ci
-    - run: npm run build
-    - run: rm -rf dist # We want code scanning to analyze lib instead (individual .js files)
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3

.github/workflows/licensed.yml

@@ -1,14 +0,0 @@
-name: Licensed
-
-on:
-  push: {branches: main}
-  pull_request: {branches: main}
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    name: Check licenses
-    steps:
-      - uses: actions/checkout@v6
-      - run: npm ci
-      - run: npm run licensed-check

.github/workflows/publish-immutable-actions.yml

@@ -1,20 +0,0 @@
-name: 'Publish Immutable Action Version'
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      id-token: write
-      packages: write
-
-    steps:
-      - name: Checking out
-        uses: actions/checkout@v6
-      - name: Publish
-        id: publish
-        uses: actions/publish-immutable-action@0.0.3

.github/workflows/test.yml

@@ -1,357 +0,0 @@
-name: Build and Test
-
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-      - releases/*
-
-
-# Note that when you see patterns like "ref: test-data/v2/basic" within this workflow,
-# these refer to "test-data" branches on this actions/checkout repo.
-# (For example, test-data/v2/basic -> https://github.com/actions/checkout/tree/test-data/v2/basic)
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 24.x
-      - uses: actions/checkout@v6
-      - run: npm ci
-      - run: npm run build
-      - run: npm run format-check
-      - run: npm run lint
-      - run: npm test
-      - name: Verify no unstaged changes
-        run: __test__/verify-no-unstaged-changes.sh
-
-  test:
-    strategy:
-      matrix:
-        runs-on: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.runs-on }}
-
-    steps:
-      # Clone this repo
-      - name: Checkout
-        uses: actions/checkout@v6
-
-      # Basic checkout
-      - name: Checkout basic
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        shell: bash
-        run: __test__/verify-basic.sh
-
-      # Clean
-      - name: Modify work tree
-        shell: bash
-        run: __test__/modify-work-tree.sh
-      - name: Checkout clean
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify clean
-        shell: bash
-        run: __test__/verify-clean.sh
-
-      # Side by side
-      - name: Checkout side by side 1
-        uses: ./
-        with:
-          ref: test-data/v2/side-by-side-1
-          path: side-by-side-1
-      - name: Checkout side by side 2
-        uses: ./
-        with:
-          ref: test-data/v2/side-by-side-2
-          path: side-by-side-2
-      - name: Verify side by side
-        shell: bash
-        run: __test__/verify-side-by-side.sh
-
-      # Filter
-      - name: Fetch filter
-        uses: ./
-        with:
-          filter: 'blob:none'
-          path: fetch-filter
-
-      - name: Verify fetch filter
-        run: __test__/verify-fetch-filter.sh
-
-      # Fetch tags
-      - name: Checkout with fetch-tags
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: fetch-tags-test
-          fetch-tags: true
-      - name: Verify fetch-tags
-        shell: bash
-        run: __test__/verify-fetch-tags.sh
-
-      # Sparse checkout
-      - name: Sparse checkout
-        uses: ./
-        with:
-          sparse-checkout: |
-            __test__
-            .github
-            dist
-          path: sparse-checkout
-
-      - name: Verify sparse checkout
-        run: __test__/verify-sparse-checkout.sh
-
-      # Disabled sparse checkout in existing checkout
-      - name: Disabled sparse checkout
-        uses: ./
-        with:
-          path: sparse-checkout
-
-      - name: Verify disabled sparse checkout
-        shell: bash
-        run: set -x && ls -l sparse-checkout/src/git-command-manager.ts
-
-      # Sparse checkout (non-cone mode)
-      - name: Sparse checkout (non-cone mode)
-        uses: ./
-        with:
-          sparse-checkout: |
-            /__test__/
-            /.github/
-            /dist/
-          sparse-checkout-cone-mode: false
-          path: sparse-checkout-non-cone-mode
-
-      - name: Verify sparse checkout (non-cone mode)
-        run: __test__/verify-sparse-checkout-non-cone-mode.sh
-
-      # LFS
-      - name: Checkout LFS
-        uses: ./
-        with:
-          repository: actions/checkout # hardcoded, otherwise doesn't work from a fork
-          ref: test-data/v2/lfs
-          path: lfs
-          lfs: true
-      - name: Verify LFS
-        shell: bash
-        run: __test__/verify-lfs.sh
-
-      # Submodules false
-      - name: Checkout submodules false
-        uses: ./
-        with:
-          ref: test-data/v2/submodule-ssh-url
-          path: submodules-false
-      - name: Verify submodules false
-        run: __test__/verify-submodules-false.sh
-
-      # Submodules one level
-      - name: Checkout submodules true
-        uses: ./
-        with:
-          ref: test-data/v2/submodule-ssh-url
-          path: submodules-true
-          submodules: true
-      - name: Verify submodules true
-        run: __test__/verify-submodules-true.sh
-
-      # Submodules recursive
-      - name: Checkout submodules recursive
-        uses: ./
-        with:
-          ref: test-data/v2/submodule-ssh-url
-          path: submodules-recursive
-          submodules: recursive
-      - name: Verify submodules recursive
-        run: __test__/verify-submodules-recursive.sh
-
-      # Worktree credentials
-      - name: Checkout for worktree test
-        uses: ./
-        with:
-          path: worktree-test
-      - name: Verify worktree credentials
-        shell: bash
-        run: __test__/verify-worktree.sh worktree-test worktree-branch
-
-      # Worktree credentials in container step
-      - name: Verify worktree credentials in container step
-        if: runner.os == 'Linux'
-        uses: docker://bitnami/git:latest
-        with:
-          args: bash __test__/verify-worktree.sh worktree-test container-worktree-branch
-
-      # Basic checkout using REST API
-      - name: Remove basic
-        if: runner.os != 'windows'
-        run: rm -rf basic
-      - name: Remove basic (Windows)
-        if: runner.os == 'windows'
-        shell: cmd
-        run: rmdir /s /q basic
-      - name: Override git version
-        if: runner.os != 'windows'
-        run: __test__/override-git-version.sh
-      - name: Override git version (Windows)
-        if: runner.os == 'windows'
-        run: __test__\\override-git-version.cmd
-      - name: Checkout basic using REST API
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        run: __test__/verify-basic.sh --archive
-
-  test-proxy:
-    runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/actions/test-ubuntu-git:main.20240221.114913.703z
-      options: --dns 127.0.0.1
-    services:
-      squid-proxy:
-        image: ubuntu/squid:latest
-        ports:
-          - 3128:3128
-    env:
-      https_proxy: http://squid-proxy:3128
-    steps:
-      # Clone this repo
-      - name: Checkout
-        uses: actions/checkout@v6
-
-      # Basic checkout using git
-      - name: Checkout basic
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        run: __test__/verify-basic.sh
-
-      # Basic checkout using REST API
-      - name: Remove basic
-        run: rm -rf basic
-      - name: Override git version
-        run: __test__/override-git-version.sh
-      - name: Basic checkout using REST API
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        run: __test__/verify-basic.sh --archive
-
-  test-bypass-proxy:
-    runs-on: ubuntu-latest
-    env:
-      https_proxy: http://no-such-proxy:3128
-      no_proxy: api.github.com,github.com
-    steps:
-      # Clone this repo
-      - name: Checkout
-        uses: actions/checkout@v6
-
-      # Basic checkout using git
-      - name: Checkout basic
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        run: __test__/verify-basic.sh
-      - name: Remove basic
-        run: rm -rf basic
-
-      # Basic checkout using REST API
-      - name: Override git version
-        run: __test__/override-git-version.sh
-      - name: Checkout basic using REST API
-        uses: ./
-        with:
-          ref: test-data/v2/basic
-          path: basic
-      - name: Verify basic
-        run: __test__/verify-basic.sh --archive
-
-  test-git-container:
-    runs-on: ubuntu-latest
-    container: bitnami/git:latest
-    steps:
-      # Clone this repo
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          path: localClone
-
-      # Basic checkout using git
-      - name: Checkout basic
-        uses: ./localClone
-        with:
-          ref: test-data/v2/basic
-      - name: Verify basic
-        run: |
-          if [ ! -f "./basic-file.txt" ]; then
-              echo "Expected basic file does not exist"
-              exit 1
-          fi
-
-          # Verify .git folder
-          if [ ! -d "./.git" ]; then
-            echo "Expected ./.git folder to exist"
-            exit 1
-          fi
-
-          # Verify auth token
-          git config --global --add safe.directory "*"
-          git fetch --no-tags --depth=1 origin +refs/heads/main:refs/remotes/origin/main
-
-      # needed to make checkout post cleanup succeed
-      - name: Fix Checkout v6
-        uses: actions/checkout@v6
-        with:
-          path: localClone
-
-  test-output:
-    runs-on: ubuntu-latest
-    steps:
-      # Clone this repo
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          path: actions-checkout
-
-      # Basic checkout using git
-      - name: Checkout basic
-        id: checkout
-        uses: ./actions-checkout
-        with:
-          path: cloned-using-local-action
-          ref: test-data/v2/basic
-
-      # Verify output
-      - name: Verify output
-        run: |
-          echo "Commit: ${{ steps.checkout.outputs.commit }}"
-          echo "Ref: ${{ steps.checkout.outputs.ref }}"
-
-          if [ "${{ steps.checkout.outputs.ref }}" != "test-data/v2/basic" ]; then
-            echo "Expected ref to be test-data/v2/basic"
-            exit 1
-          fi
-
-          if [ "${{ steps.checkout.outputs.commit }}" != "82f71901cf8c021332310dcc8cdba84c4193ff5d" ]; then
-            echo "Expected commit to be 82f71901cf8c021332310dcc8cdba84c4193ff5d"
-            exit 1
-          fi

.github/workflows/update-main-version.yml

@@ -1,36 +0,0 @@
-name: Update Main Version
-run-name: Move ${{ github.event.inputs.major_version }} to ${{ github.event.inputs.target }}
-
-on:
-  workflow_dispatch:
-    inputs:
-      target:
-        description: The tag or reference to use
-        required: true
-      major_version:
-        type: choice
-        description: The major version to update
-        options:
-          - v5
-          - v4
-          - v3
-          - v2
-
-jobs:
-  tag:
-    runs-on: ubuntu-latest
-    steps:
-    # Note this update workflow can also be used as a rollback tool.
-    # For that reason, it's best to pin `actions/checkout` to a known, stable version
-    # (typically, about two releases back).
-    - uses: actions/checkout@v6
-      with:
-        fetch-depth: 0
-    - name: Git config
-      run: |
-        git config user.name "github-actions[bot]"
-        git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-    - name: Tag new target
-      run: git tag -f ${{ github.event.inputs.major_version }} ${{ github.event.inputs.target }}
-    - name: Push new tag
-      run: git push origin ${{ github.event.inputs.major_version }} --force

.github/workflows/update-test-ubuntu-git.yml

@@ -1,59 +0,0 @@
-name: Publish test-ubuntu-git Container
-
-on:
-  # Use an on demand workflow trigger.  
-  # (Forked copies of actions/checkout won't have permission to update GHCR.io/actions, 
-  #  so avoid trigger events that run automatically.)
-  workflow_dispatch:
-    inputs:
-      publish:
-        description:  'Publish to ghcr.io? (main branch only)'
-        type: boolean
-        required: true
-        default: false
-
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: actions/test-ubuntu-git
-
-jobs:
-  build-and-push-image:
-    runs-on: ubuntu-latest
-    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
-    permissions:
-      contents: read
-      packages: write
- 
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-
-      # Use `docker/login-action` to log in to GHCR.io. 
-      # Once published, the packages are scoped to the account defined here.
-      - name: Log in to the ghcr.io container registry
-        uses: docker/login-action@v3.3.0
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Format Timestamp
-        id: timestamp
-        # Use `date` with a custom format to achieve the key=value format GITHUB_OUTPUT expects.
-        run: date -u "+now=%Y%m%d.%H%M%S.%3NZ" >> "$GITHUB_OUTPUT"
-
-      - name: Issue Image Publish Warning
-        if:  ${{ inputs.publish && github.ref_name != 'main' }}
-        run: echo "::warning::test-ubuntu-git images can only be published from the actions/checkout 'main' branch.  Workflow will continue with push/publish disabled."
-
-      # Use `docker/build-push-action` to build (and optionally publish) the image. 
-      - name: Build Docker Image (with optional Push)
-        uses: docker/build-push-action@v6.5.0
-        with:
-          context: .
-          file: images/test-ubuntu-git.Dockerfile
-          # For now, attempts to push to ghcr.io must target the `main` branch.
-          # In the future, consider also allowing attempts from `releases/*` branches.
-          push: ${{ inputs.publish && github.ref_name == 'main' }}
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.ref_name }}.${{ steps.timestamp.outputs.now }}

.licensed.yml

@@ -11,4 +11,5 @@ allowed:
   - unlicense
 
 reviewed:
-  npm:
+  npm:
+    - "@actions/http-client" # MIT

.licenses/npm/@actions/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/core"
-version: 1.10.1
+version: 3.0.1
 type: npm
 summary: Actions core lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/core

.licenses/npm/@actions/exec.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/exec"
-version: 1.1.1
+version: 3.0.0
 type: npm
 summary: Actions exec lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/exec

.licenses/npm/@actions/github.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/github"
-version: 6.0.0
+version: 9.1.1
 type: npm
 summary: Actions github lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/github

.licenses/npm/@actions/http-client-3.0.2.dep.yml

@@ -1,10 +1,10 @@
 ---
 name: "@actions/http-client"
-version: 2.2.1
+version: 3.0.2
 type: npm
 summary: Actions Http Client
 homepage: https://github.com/actions/toolkit/tree/main/packages/http-client
-license: mit
+license: other
 licenses:
 - sources: LICENSE
   text: |

.licenses/npm/@actions/http-client-4.0.1.dep.yml

@@ -0,0 +1,32 @@
+---
+name: "@actions/http-client"
+version: 4.0.1
+type: npm
+summary: Actions Http Client
+homepage: https://github.com/actions/toolkit/tree/main/packages/http-client
+license: other
+licenses:
+- sources: LICENSE
+  text: |
+    Actions Http Client for Node.js
+
+    Copyright (c) GitHub, Inc.
+
+    All rights reserved.
+
+    MIT License
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+    associated documentation files (the "Software"), to deal in the Software without restriction,
+    including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+    subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+    LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+    NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+notices: []

.licenses/npm/@actions/io.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/io"
-version: 1.1.3
+version: 3.0.2
 type: npm
 summary: Actions io lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/io

.licenses/npm/@actions/tool-cache.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/tool-cache"
-version: 2.0.1
+version: 4.0.0
 type: npm
 summary: Actions tool-cache lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/tool-cache

.licenses/npm/@fastify/busboy.dep.yml

@@ -1,30 +0,0 @@
----
-name: "@fastify/busboy"
-version: 2.1.1
-type: npm
-summary: A streaming parser for HTML form data for node.js
-homepage: 
-license: mit
-licenses:
-- sources: LICENSE
-  text: |-
-    Copyright Brian White. All rights reserved.
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to
-    deal in the Software without restriction, including without limitation the
-    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-    sell copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-    IN THE SOFTWARE.
-notices: []

.licenses/npm/@octokit/auth-token.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@octokit/auth-token"
-version: 4.0.0
+version: 6.0.0
 type: npm
 summary: GitHub API token authentication for browsers and Node.js
 homepage: 

.licenses/npm/@octokit/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@octokit/core"
-version: 5.2.0
+version: 7.0.6
 type: npm
 summary: Extendable client for GitHub's REST & GraphQL APIs
 homepage: 

.licenses/npm/@octokit/endpoint.dep.yml

@@ -1,9 +1,9 @@
 ---
 name: "@octokit/endpoint"
-version: 9.0.6
+version: 11.0.3
 type: npm
 summary: Turns REST API endpoints into generic request options
-homepage:
+homepage: 
 license: mit
 licenses:
 - sources: LICENSE

.licenses/npm/@octokit/graphql.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@octokit/graphql"
-version: 7.1.0
+version: 9.0.3
 type: npm
 summary: GitHub GraphQL API client for browsers and Node
 homepage: 

.licenses/npm/@octokit/openapi-types-20.0.0.dep.yml

@@ -1,20 +0,0 @@
----
-name: "@octokit/openapi-types"
-version: 20.0.0
-type: npm
-summary: Generated TypeScript definitions based on GitHub's OpenAPI spec for api.github.com
-homepage: 
-license: mit
-licenses:
-- sources: LICENSE
-  text: |-
-    Copyright 2020 Gregor Martynus
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-- sources: README.md
-  text: "[MIT](LICENSE)"
-notices: []

.licenses/npm/@octokit/openapi-types.dep.yml

@@ -1,14 +1,14 @@
 ---
 name: "@octokit/openapi-types"
-version: 22.1.0
+version: 27.0.0
 type: npm
 summary: Generated TypeScript definitions based on GitHub's OpenAPI spec for api.github.com
 homepage: 
 license: mit
 licenses:
 - sources: LICENSE
-  text: |-
-    Copyright 2020 Gregor Martynus
+  text: |
+    Copyright (c) GitHub 2025 - Licensed as MIT.
 
     Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

.licenses/npm/@octokit/plugin-paginate-rest.dep.yml

@@ -1,9 +1,9 @@
 ---
 name: "@octokit/plugin-paginate-rest"
-version: 9.2.2
+version: 14.0.0
 type: npm
 summary: Octokit plugin to paginate REST API endpoint responses
-homepage:
+homepage: 
 license: mit
 licenses:
 - sources: LICENSE

.licenses/npm/@octokit/plugin-rest-endpoint-methods.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@octokit/plugin-rest-endpoint-methods"
-version: 10.4.1
+version: 17.0.0
 type: npm
 summary: Octokit plugin adding one method for all of api.github.com REST API endpoints
 homepage: 

.licenses/npm/@octokit/request-error.dep.yml

@@ -1,9 +1,9 @@
 ---
 name: "@octokit/request-error"
-version: 5.1.1
+version: 7.1.0
 type: npm
 summary: Error class for Octokit request errors
-homepage:
+homepage: 
 license: mit
 licenses:
 - sources: LICENSE

.licenses/npm/@octokit/request.dep.yml

@@ -1,10 +1,10 @@
 ---
 name: "@octokit/request"
-version: 8.4.1
+version: 10.0.10
 type: npm
 summary: Send parameterized requests to GitHub's APIs with sensible defaults in browsers
   and Node
-homepage:
+homepage: 
 license: mit
 licenses:
 - sources: LICENSE

.licenses/npm/@octokit/types-12.6.0.dep.yml

@@ -1,20 +0,0 @@
----
-name: "@octokit/types"
-version: 12.6.0
-type: npm
-summary: Shared TypeScript definitions for Octokit projects
-homepage: 
-license: mit
-licenses:
-- sources: LICENSE
-  text: |
-    MIT License Copyright (c) 2019 Octokit contributors
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice (including the next paragraph) shall be included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-- sources: README.md
-  text: "[MIT](LICENSE)"
-notices: []

.licenses/npm/@octokit/types.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@octokit/types"
-version: 13.4.1
+version: 16.0.0
 type: npm
 summary: Shared TypeScript definitions for Octokit projects
 homepage: 

.licenses/npm/before-after-hook.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: before-after-hook
-version: 2.2.3
+version: 4.0.0
 type: npm
 summary: asynchronous before/error/after hooks for internal functionality
 homepage: 

.licenses/npm/content-type.dep.yml

@@ -0,0 +1,47 @@
+---
+name: content-type
+version: 2.0.0
+type: npm
+summary: Create and parse HTTP Content-Type header
+homepage: 
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    (The MIT License)
+
+    Copyright (c) 2015 Douglas Christopher Wilson
+
+    Permission is hereby granted, free of charge, to any person obtaining
+    a copy of this software and associated documentation files (the
+    'Software'), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, sublicense, and/or sell copies of the Software, and to
+    permit persons to whom the Software is furnished to do so, subject to
+    the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+- sources: README.md
+  text: |-
+    [MIT](LICENSE)
+
+    [npm-image]: https://img.shields.io/npm/v/content-type
+    [npm-url]: https://npmjs.org/package/content-type
+    [downloads-image]: https://img.shields.io/npm/dm/content-type
+    [downloads-url]: https://npmjs.org/package/content-type
+    [build-image]: https://img.shields.io/github/actions/workflow/status/jshttp/content-type/ci.yml?branch=master
+    [build-url]: https://github.com/jshttp/content-type/actions/workflows/ci.yml?query=branch%3Amaster
+    [coverage-image]: https://img.shields.io/codecov/c/gh/jshttp/content-type
+    [coverage-url]: https://codecov.io/gh/jshttp/content-type
+    [license-image]: http://img.shields.io/npm/l/content-type.svg?style=flat
+    [license-url]: LICENSE
+notices: []

.licenses/npm/deprecation.dep.yml

@@ -1,28 +0,0 @@
----
-name: deprecation
-version: 2.3.1
-type: npm
-summary: Log a deprecation message with stack
-homepage: https://github.com/gr2m/deprecation#readme
-license: isc
-licenses:
-- sources: LICENSE
-  text: |
-    The ISC License
-
-    Copyright (c) Gregor Martynus and contributors
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose with or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
-    IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-- sources: README.md
-  text: "[ISC](LICENSE)"
-notices: []

.licenses/npm/json-with-bigint.dep.yml

@@ -1,16 +1,17 @@
 ---
-name: uuid
-version: 3.4.0
+name: json-with-bigint
+version: 3.5.8
 type: npm
-summary: RFC4122 (v1, v4, and v5) UUIDs
+summary: JS library that allows you to easily serialize and deserialize data with
+  BigInt values
 homepage: 
 license: mit
 licenses:
-- sources: LICENSE.md
+- sources: LICENSE
   text: |
-    The MIT License (MIT)
+    MIT License
 
-    Copyright (c) 2010-2016 Robert Kieffer and other contributors
+    Copyright (c) 2023 Ivan Korolenko
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
@@ -29,11 +30,4 @@ licenses:
     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     SOFTWARE.
-notices:
-- sources: AUTHORS
-  text: |-
-    Robert Kieffer <robert@broofa.com>
-    Christoph Tavan <dev@tavan.de>
-    AJ ONeal <coolaj86@gmail.com>
-    Vincent Voyer <vincent@zeroload.net>
-    Roman Shtylman <shtylman@gmail.com>
+notices: []

.licenses/npm/once.dep.yml

@@ -1,26 +0,0 @@
----
-name: once
-version: 1.4.0
-type: npm
-summary: Run a function exactly one time
-homepage: https://github.com/isaacs/once#readme
-license: isc
-licenses:
-- sources: LICENSE
-  text: |
-    The ISC License
-
-    Copyright (c) Isaac Z. Schlueter and Contributors
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose with or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
-    IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-notices: []

.licenses/npm/semver.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: semver
-version: 6.3.1
+version: 7.8.4
 type: npm
 summary: The semantic version parser used by npm.
 homepage: 

.licenses/npm/undici.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: undici
-version: 5.29.0
+version: 6.27.0
 type: npm
 summary: An HTTP/1.1 client, written from scratch for Node.js
 homepage: https://undici.nodejs.org

.licenses/npm/universal-user-agent.dep.yml

@@ -1,8 +1,8 @@
 ---
 name: universal-user-agent
-version: 6.0.1
+version: 7.0.3
 type: npm
-summary: Get a user agent string in both browser and node
+summary: Get a user agent string across all JavaScript Runtime Environments
 homepage: 
 license: isc
 licenses:
@@ -10,7 +10,7 @@ licenses:
   text: |
     # [ISC License](https://spdx.org/licenses/ISC)
 
-    Copyright (c) 2018, Gregor Martynus (https://github.com/gr2m)
+    Copyright (c) 2018-2021, Gregor Martynus (https://github.com/gr2m)
 
     Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
 

.licenses/npm/uuid-8.3.2.dep.yml

@@ -1,20 +0,0 @@
----
-name: uuid
-version: 8.3.2
-type: npm
-summary: RFC4122 (v1, v4, and v5) UUIDs
-homepage: https://github.com/uuidjs/uuid#readme
-license: mit
-licenses:
-- sources: LICENSE.md
-  text: |
-    The MIT License (MIT)
-
-    Copyright (c) 2010-2020 Robert Kieffer and other contributors
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-notices: []

.licenses/npm/uuid-9.0.1.dep.yml

@@ -1,20 +0,0 @@
----
-name: uuid
-version: 9.0.1
-type: npm
-summary: RFC4122 (v1, v4, and v5) UUIDs
-homepage: 
-license: mit
-licenses:
-- sources: LICENSE.md
-  text: |
-    The MIT License (MIT)
-
-    Copyright (c) 2010-2020 Robert Kieffer and other contributors
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-notices: []

.licenses/npm/wrappy.dep.yml

@@ -1,26 +0,0 @@
----
-name: wrappy
-version: 1.0.2
-type: npm
-summary: Callback wrapping utility
-homepage: https://github.com/npm/wrappy
-license: isc
-licenses:
-- sources: LICENSE
-  text: |
-    The ISC License
-
-    Copyright (c) Isaac Z. Schlueter and Contributors
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose with or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
-    IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-notices: []

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## v7.0.1
+* Skip running unsafe pr check if input is default by @aiqiaoy in https://github.com/actions/checkout/pull/2518
+* Trim only ascii whitespace for branch by @aiqiaoy in https://github.com/actions/checkout/pull/2521
+* Escape values passed to --unset by @aiqiaoy in https://github.com/actions/checkout/pull/2530
+* Various dependency updates
+
+## v7.0.0
+* Block checking out fork PR for pull_request_target and workflow_run by @aiqiaoy in https://github.com/actions/checkout/pull/2454
+* Various dependency updates 
+
 ## v6.0.3
 * Fix checkout init for SHA-256 repositories by @yaananth in https://github.com/actions/checkout/pull/2439
 * fix: expand merge commit SHA regex and add SHA-256 test cases by @yaananth in https://github.com/actions/checkout/pull/2414

README.md

@@ -1,371 +1,37 @@
-[![Build and Test](https://github.com/actions/checkout/actions/workflows/test.yml/badge.svg)](https://github.com/actions/checkout/actions/workflows/test.yml)
+# actions-checkout — actions 本地镜像（mu-ref）
 
-# Checkout v6
+- 上游: https://github.com/actions/checkout （GitHub 公开仓库的只读镜像）
+- 引用方式（workflow 内绝对 URL）:
+  ```yaml
+  uses: https://git.moneywood.site/mu-ref/actions-checkout@v4
+  ```
+- 标签: 上游全部 tag（v4 为流动标签，随上游发布移动）
 
-## What's new
+## 防护规则（每次同步后必须复核，违反其一即回归 2026-08-26 调度事故）
 
-- Improved credential security: `persist-credentials` now stores credentials in a separate file under `$RUNNER_TEMP` instead of directly in `.git/config`
-- No workflow changes required — `git fetch`, `git push`, etc. continue to work automatically
-- Running authenticated git commands from a [Docker container action](https://docs.github.com/actions/sharing-automations/creating-actions/creating-a-docker-container-action) requires Actions Runner [v2.329.0](https://github.com/actions/runner/releases/tag/v2.329.0) or later
+1. 本仓 Actions 保持禁用（repo 设置 has_actions=false；事故证明它挡不住已登记的 schedule，必须配合第 2 条）
+2. 仓内不得存在任何 workflow 文件（.github/workflows/ 已剥离；Gitea 1.24.7 不会随文件删除清理 schedule 登记）
 
-# Checkout v5
+## 同步步骤（更新上游时执行）
 
-## What's new
-
-- Updated to the node24 runtime
-  - This requires a minimum Actions Runner version of [v2.327.1](https://github.com/actions/runner/releases/tag/v2.327.1) to run.
-
-
-# Checkout v4
-
-This action checks-out your repository under `$GITHUB_WORKSPACE`, so your workflow can access it.
-
-Only a single commit is fetched by default, for the ref/SHA that triggered the workflow. Set `fetch-depth: 0` to fetch all history for all branches and tags. Refer [here](https://docs.github.com/actions/using-workflows/events-that-trigger-workflows) to learn which commit `$GITHUB_SHA` points to for different events.
-
-The auth token is persisted in the local git config. This enables your scripts to run authenticated git commands. The token is removed during post-job cleanup. Set `persist-credentials: false` to opt-out.
-
-When Git 2.18 or higher is not in your PATH, falls back to the REST API to download the files.
-
-### Note
-
-Thank you for your interest in this GitHub action, however, right now we are not taking contributions. 
-
-We continue to focus our resources on strategic areas that help our customers be successful while making developers' lives easier. While GitHub Actions remains a key part of this vision, we are allocating resources towards other areas of Actions and are not taking contributions to this repository at this time. The GitHub public roadmap is the best place to follow along for any updates on features we’re working on and what stage they’re in.
-
-We are taking the following steps to better direct requests related to GitHub Actions, including:
-
-1. We will be directing questions and support requests to our [Community Discussions area](https://github.com/orgs/community/discussions/categories/actions)
-
-2. High Priority bugs can be reported through Community Discussions or you can report these to our support team https://support.github.com/contact/bug-report.
-
-3. Security Issues should be handled as per our [security.md](security.md)
-
-We will still provide security updates for this project and fix major breaking changes during this time.
-
-You are welcome to still raise bugs in this repo.
-
-# What's new
-
-Please refer to the [release page](https://github.com/actions/checkout/releases/latest) for the latest release notes.
-
-# Usage
-
-<!-- start usage -->
-```yaml
-- uses: actions/checkout@v6
-  with:
-    # Repository name with owner. For example, actions/checkout
-    # Default: ${{ github.repository }}
-    repository: ''
-
-    # The branch, tag or SHA to checkout. When checking out the repository that
-    # triggered a workflow, this defaults to the reference or SHA for that event.
-    # Otherwise, uses the default branch.
-    ref: ''
-
-    # Personal access token (PAT) used to fetch the repository. The PAT is configured
-    # with the local git config, which enables your scripts to run authenticated git
-    # commands. The post-job step removes the PAT.
-    #
-    # We recommend using a service account with the least permissions necessary. Also
-    # when generating a new PAT, select the least scopes necessary.
-    #
-    # [Learn more about creating and using encrypted secrets](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/creating-and-using-encrypted-secrets)
-    #
-    # Default: ${{ github.token }}
-    token: ''
-
-    # SSH key used to fetch the repository. The SSH key is configured with the local
-    # git config, which enables your scripts to run authenticated git commands. The
-    # post-job step removes the SSH key.
-    #
-    # We recommend using a service account with the least permissions necessary.
-    #
-    # [Learn more about creating and using encrypted secrets](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/creating-and-using-encrypted-secrets)
-    ssh-key: ''
-
-    # Known hosts in addition to the user and global host key database. The public SSH
-    # keys for a host may be obtained using the utility `ssh-keyscan`. For example,
-    # `ssh-keyscan github.com`. The public key for github.com is always implicitly
-    # added.
-    ssh-known-hosts: ''
-
-    # Whether to perform strict host key checking. When true, adds the options
-    # `StrictHostKeyChecking=yes` and `CheckHostIP=no` to the SSH command line. Use
-    # the input `ssh-known-hosts` to configure additional hosts.
-    # Default: true
-    ssh-strict: ''
-
-    # The user to use when connecting to the remote SSH host. By default 'git' is
-    # used.
-    # Default: git
-    ssh-user: ''
-
-    # Whether to configure the token or SSH key with the local git config
-    # Default: true
-    persist-credentials: ''
-
-    # Relative path under $GITHUB_WORKSPACE to place the repository
-    path: ''
-
-    # Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching
-    # Default: true
-    clean: ''
-
-    # Partially clone against a given filter. Overrides sparse-checkout if set.
-    # Default: null
-    filter: ''
-
-    # Do a sparse checkout on given patterns. Each pattern should be separated with
-    # new lines.
-    # Default: null
-    sparse-checkout: ''
-
-    # Specifies whether to use cone-mode when doing a sparse checkout.
-    # Default: true
-    sparse-checkout-cone-mode: ''
-
-    # Number of commits to fetch. 0 indicates all history for all branches and tags.
-    # Default: 1
-    fetch-depth: ''
-
-    # Whether to fetch tags, even if fetch-depth > 0.
-    # Default: false
-    fetch-tags: ''
-
-    # Whether to show progress status output when fetching.
-    # Default: true
-    show-progress: ''
-
-    # Whether to download Git-LFS files
-    # Default: false
-    lfs: ''
-
-    # Whether to checkout submodules: `true` to checkout submodules or `recursive` to
-    # recursively checkout submodules.
-    #
-    # When the `ssh-key` input is not provided, SSH URLs beginning with
-    # `git@github.com:` are converted to HTTPS.
-    #
-    # Default: false
-    submodules: ''
-
-    # Add repository path as safe.directory for Git global config by running `git
-    # config --global --add safe.directory <path>`
-    # Default: true
-    set-safe-directory: ''
-
-    # The base URL for the GitHub instance that you are trying to clone from, will use
-    # environment defaults to fetch from the same instance that the workflow is
-    # running from unless specified. Example URLs are https://github.com or
-    # https://my-ghes-server.example.com
-    github-server-url: ''
-```
-<!-- end usage -->
-
-# Scenarios
-
-- [Checkout V5](#checkout-v5)
-  - [What's new](#whats-new)
-- [Checkout V4](#checkout-v4)
-    - [Note](#note)
-- [What's new](#whats-new-1)
-- [Usage](#usage)
-- [Scenarios](#scenarios)
-  - [Fetch only the root files](#fetch-only-the-root-files)
-  - [Fetch only the root files and `.github` and `src` folder](#fetch-only-the-root-files-and-github-and-src-folder)
-  - [Fetch only a single file](#fetch-only-a-single-file)
-  - [Fetch all history for all tags and branches](#fetch-all-history-for-all-tags-and-branches)
-  - [Checkout a different branch](#checkout-a-different-branch)
-  - [Checkout HEAD^](#checkout-head)
-  - [Checkout multiple repos (side by side)](#checkout-multiple-repos-side-by-side)
-  - [Checkout multiple repos (nested)](#checkout-multiple-repos-nested)
-  - [Checkout multiple repos (private)](#checkout-multiple-repos-private)
-  - [Checkout pull request HEAD commit instead of merge commit](#checkout-pull-request-head-commit-instead-of-merge-commit)
-  - [Checkout pull request on closed event](#checkout-pull-request-on-closed-event)
-  - [Push a commit using the built-in token](#push-a-commit-using-the-built-in-token)
-  - [Push a commit to a PR using the built-in token](#push-a-commit-to-a-pr-using-the-built-in-token)
-- [Recommended permissions](#recommended-permissions)
-- [License](#license)
-
-## Fetch only the root files
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    sparse-checkout: .
+```bash
+REPO=actions-checkout
+SRC=https://github.com/actions/checkout.git
+git clone --mirror "$SRC" /tmp/mirror-$REPO.git
+# 1) 剥掉 GitHub 的 PR 引用（Gitea hook 拒绝 refs/pull/*）
+git -C /tmp/mirror-$REPO.git for-each-ref --format='delete %(refname)' refs/pull | git -C /tmp/mirror-$REPO.git update-ref --stdin
+# 2) 剥掉 .github/workflows（上游 CI 不得在 Gitea 执行）
+rm -rf /tmp/wt-$REPO && git clone -q /tmp/mirror-$REPO.git /tmp/wt-$REPO
+git -C /tmp/wt-$REPO checkout -q main
+git -C /tmp/wt-$REPO rm -r -q .github/workflows
+git -C /tmp/wt-$REPO -c user.name=dsh-mulm -c user.email=dsh-mulm@est.local commit -q -m 'chore: strip upstream CI workflows'
+git -C /tmp/wt-$REPO push -q gitea-dsh:mu-ref/$REPO.git main --tags
+# 3) 复核防护规则（缺一不可）
+curl -s -H "Authorization: token $GITEA_TOKEN" http://127.0.0.1:3300/api/v1/repos/mu-ref/$REPO | jq '{has_actions}'
+git ls-tree gitea-dsh:mu-ref/$REPO.git main --name-only | grep -q '.github' && echo 'FAIL: workflow dir present' || echo OK
+git ls-remote gitea-dsh:mu-ref/$REPO.git refs/tags/v4
 ```
 
-## Fetch only the root files and `.github` and `src` folder
+## 事故记录
 
-```yaml
-- uses: actions/checkout@v6
-  with:
-    sparse-checkout: |
-      .github
-      src
-```
-
-## Fetch only a single file
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    sparse-checkout: |
-      README.md
-    sparse-checkout-cone-mode: false
-```
-
-## Fetch all history for all tags and branches
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    fetch-depth: 0
-```
-
-## Checkout a different branch
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    ref: my-branch
-```
-
-## Checkout HEAD^
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    fetch-depth: 2
-- run: git checkout HEAD^
-```
-
-## Checkout multiple repos (side by side)
-
-```yaml
-- name: Checkout
-  uses: actions/checkout@v6
-  with:
-    path: main
-
-- name: Checkout tools repo
-  uses: actions/checkout@v6
-  with:
-    repository: my-org/my-tools
-    path: my-tools
-```
-> - If your secondary repository is private or internal you will need to add the option noted in [Checkout multiple repos (private)](#Checkout-multiple-repos-private)
-
-## Checkout multiple repos (nested)
-
-```yaml
-- name: Checkout
-  uses: actions/checkout@v6
-
-- name: Checkout tools repo
-  uses: actions/checkout@v6
-  with:
-    repository: my-org/my-tools
-    path: my-tools
-```
-> - If your secondary repository is private or internal you will need to add the option noted in [Checkout multiple repos (private)](#Checkout-multiple-repos-private)
-
-## Checkout multiple repos (private)
-
-```yaml
-- name: Checkout
-  uses: actions/checkout@v6
-  with:
-    path: main
-
-- name: Checkout private tools
-  uses: actions/checkout@v6
-  with:
-    repository: my-org/my-private-tools
-    token: ${{ secrets.GH_PAT }} # `GH_PAT` is a secret that contains your PAT
-    path: my-tools
-```
-
-> - `${{ github.token }}` is scoped to the current repository, so if you want to checkout a different repository that is private you will need to provide your own [PAT](https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line).
-
-
-## Checkout pull request HEAD commit instead of merge commit
-
-```yaml
-- uses: actions/checkout@v6
-  with:
-    ref: ${{ github.event.pull_request.head.sha }}
-```
-
-## Checkout pull request on closed event
-
-```yaml
-on:
-  pull_request:
-    branches: [main]
-    types: [opened, synchronize, closed]
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-```
-
-## Push a commit using the built-in token
-
-```yaml
-on: push
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - run: |
-          date > generated.txt
-          # Note: the following account information will not work on GHES
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add .
-          git commit -m "generated"
-          git push
-```
-*NOTE:* The user email is `{user.id}+{user.login}@users.noreply.github.com`. See users API: https://api.github.com/users/github-actions%5Bbot%5D
-
-## Push a commit to a PR using the built-in token
-
-In a pull request trigger, `ref` is required as GitHub Actions checks out in detached HEAD mode, meaning it doesn’t check out your branch by default.
-
-```yaml
-on: pull_request
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          ref: ${{ github.head_ref }}
-      - run: |
-          date > generated.txt
-          # Note: the following account information will not work on GHES
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add .
-          git commit -m "generated"
-          git push
-```
-
-*NOTE:* The user email is `{user.id}+{user.login}@users.noreply.github.com`. See users API: https://api.github.com/users/github-actions%5Bbot%5D
-
-# Recommended permissions
-
-When using the `checkout` action in your GitHub Actions workflow, it is recommended to set the following `GITHUB_TOKEN` permissions to ensure proper functionality, unless alternative auth is provided via the `token` or `ssh-key` inputs:
-
-```yaml
-permissions:
-  contents: read
-```
-
-# License
-
-The scripts and documentation in this project are released under the [MIT License](LICENSE)
+- 2026-08-26: 初版镜像（est org）把上游 .github/workflows 一并推入，codeql.yml 的 schedule 被 Gitea 1.24.7 以 ~30 秒间隔重复执行，CodeQL job 挂起 17–30 分钟/个，4 并发占满 tn runner，阻断全平台 CI。处置：删仓重建 + 剥离 workflow + 禁用 Actions，最终归位 mu-ref。详见 Est-Platform-Coordination 交接文档第四节（reviews/gitea-build-pitfalls-handoff-2026-08-26.md）。

__test__/git-auth-helper.test.ts

@@ -1,12 +1,46 @@
-import * as core from '@actions/core'
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  beforeEach,
+  afterEach,
+  afterAll
+} from '@jest/globals'
 import * as fs from 'fs'
-import * as gitAuthHelper from '../lib/git-auth-helper'
 import * as io from '@actions/io'
 import * as os from 'os'
 import * as path from 'path'
-import * as stateHelper from '../lib/state-helper'
-import {IGitCommandManager} from '../lib/git-command-manager'
-import {IGitSourceSettings} from '../lib/git-source-settings'
+import {fileURLToPath} from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+// Mock @actions/core before loading git-auth-helper
+jest.unstable_mockModule('@actions/core', () => ({
+  setSecret: jest.fn(),
+  error: jest.fn(),
+  warning: jest.fn(),
+  info: jest.fn(),
+  debug: jest.fn(),
+  setFailed: jest.fn()
+}))
+
+// Mock state-helper
+jest.unstable_mockModule('../src/state-helper.js', () => ({
+  setSshKeyPath: jest.fn(),
+  setSshKnownHostsPath: jest.fn(),
+  IsPost: false,
+  RepositoryPath: ''
+}))
+
+// Dynamic imports after mocking
+const core = await import('@actions/core')
+const gitAuthHelper = await import('../src/git-auth-helper.js')
+type IGitCommandManager =
+  import('../src/git-command-manager.js').IGitCommandManager
+type IGitSourceSettings =
+  import('../src/git-source-settings.js').IGitSourceSettings
 
 const isWindows = process.platform === 'win32'
 const testWorkspace = path.join(__dirname, '_temp', 'git-auth-helper')
@@ -32,25 +66,12 @@ describe('git-auth-helper tests', () => {
   })
 
   beforeEach(() => {
-    // Mock setSecret
-    jest.spyOn(core, 'setSecret').mockImplementation((secret: string) => {})
-
-    // Mock error/warning/info/debug
-    jest.spyOn(core, 'error').mockImplementation(jest.fn())
-    jest.spyOn(core, 'warning').mockImplementation(jest.fn())
-    jest.spyOn(core, 'info').mockImplementation(jest.fn())
-    jest.spyOn(core, 'debug').mockImplementation(jest.fn())
-
-    // Mock state helper
-    jest.spyOn(stateHelper, 'setSshKeyPath').mockImplementation(jest.fn())
-    jest
-      .spyOn(stateHelper, 'setSshKnownHostsPath')
-      .mockImplementation(jest.fn())
+    jest.clearAllMocks()
   })
 
   afterEach(() => {
     // Unregister mocks
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
 
     // Restore HOME
     if (originalHome) {
@@ -229,7 +250,7 @@ describe('git-auth-helper tests', () => {
     await authHelper.configureAuth()
 
     // Assert secret
-    const setSecretSpy = core.setSecret as jest.Mock<any, any>
+    const setSecretSpy = core.setSecret as jest.Mock<any>
     expect(setSecretSpy).toHaveBeenCalledTimes(1)
     const expectedSecret = Buffer.from(
       `x-access-token:${settings.authToken}`,
@@ -529,7 +550,7 @@ describe('git-auth-helper tests', () => {
       settings.sshKey = ''
       const authHelper = gitAuthHelper.createAuthHelper(git, settings)
       await authHelper.configureAuth()
-      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any, any>
+      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any>
       mockSubmoduleForeach.mockClear() // reset calls
 
       // Act
@@ -562,7 +583,7 @@ describe('git-auth-helper tests', () => {
       settings.persistCredentials = false
       const authHelper = gitAuthHelper.createAuthHelper(git, settings)
       await authHelper.configureAuth()
-      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any, any>
+      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any>
       mockSubmoduleForeach.mockClear() // reset calls
 
       // Act
@@ -588,7 +609,7 @@ describe('git-auth-helper tests', () => {
       settings.sshKey = ''
       const authHelper = gitAuthHelper.createAuthHelper(git, settings)
       await authHelper.configureAuth()
-      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any, any>
+      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any>
       mockSubmoduleForeach.mockClear() // reset calls
 
       // Act
@@ -627,7 +648,7 @@ describe('git-auth-helper tests', () => {
       )
       const authHelper = gitAuthHelper.createAuthHelper(git, settings)
       await authHelper.configureAuth()
-      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any, any>
+      const mockSubmoduleForeach = git.submoduleForeach as jest.Mock<any>
       mockSubmoduleForeach.mockClear() // reset calls
 
       // Act
@@ -809,7 +830,7 @@ describe('git-auth-helper tests', () => {
 
     // Mock getSubmoduleConfigPaths to return our fake submodules (for both configure and remove)
     const mockGetSubmoduleConfigPaths =
-      git.getSubmoduleConfigPaths as jest.Mock<any, any>
+      git.getSubmoduleConfigPaths as jest.Mock<any>
     mockGetSubmoduleConfigPaths.mockResolvedValue([
       submodule1ConfigPath,
       submodule2ConfigPath
@@ -1147,7 +1168,7 @@ async function setup(testName: string): Promise<void> {
     ),
     tryReset: jest.fn(),
     version: jest.fn()
-  }
+  } as unknown as IGitCommandManager & {env: {[key: string]: string}}
 
   settings = {
     authToken: 'some auth token',
@@ -1173,7 +1194,8 @@ async function setup(testName: string): Promise<void> {
     sshUser: '',
     workflowOrganizationId: 123456,
     setSafeDirectory: true,
-    githubServerUrl: githubServerUrl
+    githubServerUrl: githubServerUrl,
+    allowUnsafePrCheckout: false
   }
 }
 

__test__/git-command-manager.test.ts

@@ -1,26 +1,51 @@
-import * as exec from '@actions/exec'
-import * as fshelper from '../lib/fs-helper'
-import * as commandManager from '../lib/git-command-manager'
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  beforeEach,
+  afterEach,
+  afterAll
+} from '@jest/globals'
 
-let git: commandManager.IGitCommandManager
-let mockExec = jest.fn()
+// Mock @actions/exec
+const mockExec = jest.fn()
+jest.unstable_mockModule('@actions/exec', () => ({
+  exec: mockExec
+}))
+
+// Mock fs-helper
+const mockFileExistsSync = jest.fn()
+const mockDirectoryExistsSync = jest.fn()
+jest.unstable_mockModule('../src/fs-helper.js', () => ({
+  fileExistsSync: mockFileExistsSync,
+  directoryExistsSync: mockDirectoryExistsSync
+}))
+
+// Dynamic imports after mocking
+const commandManager = await import('../src/git-command-manager.js')
+type IGitCommandManager =
+  import('../src/git-command-manager.js').IGitCommandManager
+
+let git: IGitCommandManager
 
 describe('git-auth-helper tests', () => {
   beforeAll(async () => {})
 
   beforeEach(async () => {
-    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
-    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
+    mockFileExistsSync.mockReset()
+    mockDirectoryExistsSync.mockReset()
   })
 
   afterEach(() => {
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
   })
 
   afterAll(() => {})
 
   it('branch list matches', async () => {
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       console.log(args, options.listeners.stdout)
 
       if (args.includes('version')) {
@@ -36,7 +61,7 @@ describe('git-auth-helper tests', () => {
 
       return 1
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
     const workingDirectory = 'test'
     const lfs = false
     const doSparseCheckout = false
@@ -53,7 +78,7 @@ describe('git-auth-helper tests', () => {
   })
 
   it('ambiguous ref name output is captured', async () => {
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       console.log(args, options.listeners.stdout)
 
       if (args.includes('version')) {
@@ -72,7 +97,7 @@ describe('git-auth-helper tests', () => {
 
       return 1
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
     const workingDirectory = 'test'
     const lfs = false
     const doSparseCheckout = false
@@ -91,9 +116,9 @@ describe('git-auth-helper tests', () => {
 
 describe('Test fetchDepth and fetchTags options', () => {
   beforeEach(async () => {
-    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
-    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
-    mockExec.mockImplementation((path, args, options) => {
+    mockFileExistsSync.mockReset()
+    mockDirectoryExistsSync.mockReset()
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       console.log(args, options.listeners.stdout)
 
       if (args.includes('version')) {
@@ -105,11 +130,11 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   afterEach(() => {
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
   })
 
   it('should call execGit with the correct arguments when fetchDepth is 0', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
     const workingDirectory = 'test'
     const lfs = false
     const doSparseCheckout = false
@@ -146,7 +171,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when fetchDepth is 0 and refSpec includes tags', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -184,7 +209,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when fetchDepth is 1', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -222,7 +247,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when fetchDepth is 1 and refSpec includes tags', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -261,7 +286,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when showProgress is true', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -299,7 +324,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when fetchDepth is 42 and showProgress is true', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -339,7 +364,7 @@ describe('Test fetchDepth and fetchTags options', () => {
   })
 
   it('should call execGit with the correct arguments when showProgress is true and refSpec includes tags', async () => {
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -380,23 +405,23 @@ describe('Test fetchDepth and fetchTags options', () => {
 
 describe('repository initialization object format', () => {
   beforeEach(async () => {
-    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
-    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
+    mockFileExistsSync.mockReset()
+    mockDirectoryExistsSync.mockReset()
   })
 
   afterEach(() => {
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
   })
 
   it('initializes SHA-256 repositories with the matching object format', async () => {
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       if (args.includes('version')) {
         options.listeners.stdout(Buffer.from('git version 2.50.1'))
       }
 
       return 0
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     git = await commandManager.createCommandManager('test', false, false)
 
@@ -410,14 +435,14 @@ describe('repository initialization object format', () => {
   })
 
   it('initializes SHA-1 repositories with existing default arguments', async () => {
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       if (args.includes('version')) {
         options.listeners.stdout(Buffer.from('git version 2.50.1'))
       }
 
       return 0
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     git = await commandManager.createCommandManager('test', false, false)
 
@@ -433,12 +458,12 @@ describe('repository initialization object format', () => {
 
 describe('git user-agent with orchestration ID', () => {
   beforeEach(async () => {
-    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
-    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
+    mockFileExistsSync.mockReset()
+    mockDirectoryExistsSync.mockReset()
   })
 
   afterEach(() => {
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
     // Clean up environment variable to prevent test pollution
     delete process.env['ACTIONS_ORCHESTRATION_ID']
   })
@@ -448,7 +473,7 @@ describe('git user-agent with orchestration ID', () => {
     process.env['ACTIONS_ORCHESTRATION_ID'] = orchId
 
     let capturedEnv: any = null
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       if (args.includes('version')) {
         options.listeners.stdout(Buffer.from('2.18'))
       }
@@ -456,7 +481,7 @@ describe('git user-agent with orchestration ID', () => {
       capturedEnv = options.env
       return 0
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -483,7 +508,7 @@ describe('git user-agent with orchestration ID', () => {
     process.env['ACTIONS_ORCHESTRATION_ID'] = orchId
 
     let capturedEnv: any = null
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       if (args.includes('version')) {
         options.listeners.stdout(Buffer.from('2.18'))
       }
@@ -491,7 +516,7 @@ describe('git user-agent with orchestration ID', () => {
       capturedEnv = options.env
       return 0
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false
@@ -517,7 +542,7 @@ describe('git user-agent with orchestration ID', () => {
     delete process.env['ACTIONS_ORCHESTRATION_ID']
 
     let capturedEnv: any = null
-    mockExec.mockImplementation((path, args, options) => {
+    mockExec.mockImplementation((path: any, args: any, options: any) => {
       if (args.includes('version')) {
         options.listeners.stdout(Buffer.from('2.18'))
       }
@@ -525,7 +550,7 @@ describe('git user-agent with orchestration ID', () => {
       capturedEnv = options.env
       return 0
     })
-    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    // exec.exec is already mockExec
 
     const workingDirectory = 'test'
     const lfs = false

__test__/git-directory-helper.test.ts

@@ -1,9 +1,36 @@
-import * as core from '@actions/core'
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  beforeEach,
+  afterEach
+} from '@jest/globals'
 import * as fs from 'fs'
-import * as gitDirectoryHelper from '../lib/git-directory-helper'
 import * as io from '@actions/io'
 import * as path from 'path'
-import {IGitCommandManager} from '../lib/git-command-manager'
+import {fileURLToPath} from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+// Mock @actions/core before loading git-directory-helper
+jest.unstable_mockModule('@actions/core', () => ({
+  error: jest.fn(),
+  warning: jest.fn(),
+  info: jest.fn(),
+  debug: jest.fn(),
+  setFailed: jest.fn(),
+  startGroup: jest.fn(),
+  endGroup: jest.fn()
+}))
+
+// Dynamic imports after mocking
+const core = await import('@actions/core')
+const gitDirectoryHelper = await import('../src/git-directory-helper.js')
+
+type IGitCommandManager =
+  import('../src/git-command-manager.js').IGitCommandManager
 
 const testWorkspace = path.join(__dirname, '_temp', 'git-directory-helper')
 let repositoryPath: string
@@ -19,16 +46,11 @@ describe('git-directory-helper tests', () => {
   })
 
   beforeEach(() => {
-    // Mock error/warning/info/debug
-    jest.spyOn(core, 'error').mockImplementation(jest.fn())
-    jest.spyOn(core, 'warning').mockImplementation(jest.fn())
-    jest.spyOn(core, 'info').mockImplementation(jest.fn())
-    jest.spyOn(core, 'debug').mockImplementation(jest.fn())
+    jest.clearAllMocks()
   })
 
   afterEach(() => {
-    // Unregister mocks
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
   })
 
   const cleansWhenCleanTrue = 'cleans when clean true'
@@ -81,7 +103,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(doesNotCheckoutDetachWhenNotAlreadyDetached)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    const mockIsDetached = git.isDetached as jest.Mock<any, any>
+    const mockIsDetached = git.isDetached as jest.Mock<any>
     mockIsDetached.mockImplementation(async () => {
       return true
     })
@@ -132,7 +154,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(removesContentsWhenCleanFails)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    let mockTryClean = git.tryClean as jest.Mock<any, any>
+    let mockTryClean = git.tryClean as jest.Mock<any>
     mockTryClean.mockImplementation(async () => {
       return false
     })
@@ -210,7 +232,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(removesContentsWhenResetFails)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    let mockTryReset = git.tryReset as jest.Mock<any, any>
+    let mockTryReset = git.tryReset as jest.Mock<any>
     mockTryReset.mockImplementation(async () => {
       return false
     })
@@ -260,7 +282,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(removesLocalBranches)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    const mockBranchList = git.branchList as jest.Mock<any, any>
+    const mockBranchList = git.branchList as jest.Mock<any>
     mockBranchList.mockImplementation(async (remote: boolean) => {
       return remote ? [] : ['local-branch-1', 'local-branch-2']
     })
@@ -291,7 +313,7 @@ describe('git-directory-helper tests', () => {
 
     //mock bad submodule
 
-    const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
+    const submoduleStatus = git.submoduleStatus as jest.Mock<any>
     submoduleStatus.mockImplementation(async (remote: boolean) => {
       return false
     })
@@ -319,7 +341,7 @@ describe('git-directory-helper tests', () => {
     await setup(doesNotCleanWhenSubmoduleStatusIsTrue)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
 
-    const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
+    const submoduleStatus = git.submoduleStatus as jest.Mock<any>
     submoduleStatus.mockImplementation(async (remote: boolean) => {
       return true
     })
@@ -381,7 +403,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(removesAncestorRemoteBranch)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    const mockBranchList = git.branchList as jest.Mock<any, any>
+    const mockBranchList = git.branchList as jest.Mock<any>
     mockBranchList.mockImplementation(async (remote: boolean) => {
       return remote ? ['origin/remote-branch-1', 'origin/remote-branch-2'] : []
     })
@@ -411,7 +433,7 @@ describe('git-directory-helper tests', () => {
     // Arrange
     await setup(removesDescendantRemoteBranches)
     await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
-    const mockBranchList = git.branchList as jest.Mock<any, any>
+    const mockBranchList = git.branchList as jest.Mock<any>
     mockBranchList.mockImplementation(async (remote: boolean) => {
       return remote
         ? ['origin/remote-branch-1/conflict', 'origin/remote-branch-2']
@@ -507,5 +529,5 @@ async function setup(testName: string): Promise<void> {
       return true
     }),
     version: jest.fn()
-  }
+  } as unknown as IGitCommandManager
 }

__test__/git-version.test.ts

@@ -1,5 +1,6 @@
-import {GitVersion} from '../src/git-version'
-import {MinimumGitSparseCheckoutVersion} from '../src/git-command-manager'
+import {describe, it, expect} from '@jest/globals'
+import {GitVersion} from '../src/git-version.js'
+import {MinimumGitSparseCheckoutVersion} from '../src/git-command-manager.js'
 
 describe('git-version tests', () => {
   it('basics', async () => {

__test__/github-api-helper.test.ts

@@ -1,11 +1,25 @@
-import * as core from '@actions/core'
-import * as github from '@actions/github'
-import * as githubApiHelper from '../lib/github-api-helper'
+import {jest, describe, it, expect, beforeEach, afterEach} from '@jest/globals'
+
+// Mock @actions/core
+const mockDebug = jest.fn()
+jest.unstable_mockModule('@actions/core', () => ({
+  debug: mockDebug,
+  info: jest.fn(),
+  warning: jest.fn(),
+  error: jest.fn()
+}))
+
+// Mock @actions/github
+const mockGetOctokit = jest.fn()
+jest.unstable_mockModule('@actions/github', () => ({
+  getOctokit: mockGetOctokit
+}))
+
+// Dynamic imports after mocking
+const githubApiHelper = await import('../src/github-api-helper.js')
 
 describe('github-api-helper object format', () => {
-  let getOctokitSpy: jest.SpyInstance
-  let debugSpy: jest.SpyInstance
-  let request: jest.Mock
+  let request: jest.Mock<any>
 
   function mockHashAlgorithmApi(hashAlgorithm: string): void {
     request = jest.fn(async () => ({
@@ -13,17 +27,18 @@ describe('github-api-helper object format', () => {
         hash_algorithm: hashAlgorithm
       }
     }))
-    getOctokitSpy = jest.spyOn(github, 'getOctokit').mockReturnValue({
+    mockGetOctokit.mockReturnValue({
       request
     } as any)
   }
 
   beforeEach(() => {
-    debugSpy = jest.spyOn(core, 'debug').mockImplementation(jest.fn())
+    mockDebug.mockClear()
+    mockGetOctokit.mockClear()
   })
 
   afterEach(() => {
-    jest.restoreAllMocks()
+    jest.clearAllMocks()
   })
 
   it('detects SHA-256 from the repository hash algorithm endpoint', async () => {
@@ -33,7 +48,7 @@ describe('github-api-helper object format', () => {
       githubApiHelper.tryGetRepositoryObjectFormat('token', 'owner', 'repo')
     ).resolves.toEqual({format: 'sha256', succeeded: true})
 
-    expect(getOctokitSpy).toHaveBeenCalledWith(
+    expect(mockGetOctokit).toHaveBeenCalledWith(
       'token',
       expect.objectContaining({baseUrl: 'https://api.github.com'})
     )
@@ -54,7 +69,6 @@ describe('github-api-helper object format', () => {
   it('detects object format from an existing commit without API calls', async () => {
     const commitSha =
       '9422233ca7ee1b17f1e905d0e141faf0c401556c41cdc6acd71c6bd685da2e92'
-    getOctokitSpy = jest.spyOn(github, 'getOctokit')
 
     await expect(
       githubApiHelper.tryGetRepositoryObjectFormat(
@@ -66,7 +80,7 @@ describe('github-api-helper object format', () => {
       )
     ).resolves.toEqual({format: 'sha256', succeeded: true})
 
-    expect(getOctokitSpy).not.toHaveBeenCalled()
+    expect(mockGetOctokit).not.toHaveBeenCalled()
   })
 
   it('returns unsuccessful when the hash algorithm endpoint value is not recognized', async () => {
@@ -75,7 +89,7 @@ describe('github-api-helper object format', () => {
     await expect(
       githubApiHelper.tryGetRepositoryObjectFormat('token', 'owner', 'repo')
     ).resolves.toEqual({format: '', succeeded: false})
-    expect(debugSpy).toHaveBeenCalledWith(
+    expect(mockDebug).toHaveBeenCalledWith(
       'Unable to determine repository object format from hash-algorithm endpoint'
     )
   })
@@ -84,14 +98,14 @@ describe('github-api-helper object format', () => {
     request = jest.fn(async () => {
       throw new Error('not found')
     })
-    jest.spyOn(github, 'getOctokit').mockReturnValue({
+    mockGetOctokit.mockReturnValue({
       request
     } as any)
 
     await expect(
       githubApiHelper.tryGetRepositoryObjectFormat('token', 'owner', 'repo')
     ).resolves.toEqual({format: '', succeeded: false})
-    expect(debugSpy).toHaveBeenCalledWith(
+    expect(mockDebug).toHaveBeenCalledWith(
       'Unable to determine repository object format from hash-algorithm endpoint: not found'
     )
   })

__test__/input-helper.test.ts

@@ -1,10 +1,13 @@
-import * as core from '@actions/core'
-import * as fsHelper from '../lib/fs-helper'
-import * as github from '@actions/github'
-import * as inputHelper from '../lib/input-helper'
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  beforeEach,
+  afterAll
+} from '@jest/globals'
 import * as path from 'path'
-import * as workflowContextHelper from '../lib/workflow-context-helper'
-import {IGitSourceSettings} from '../lib/git-source-settings'
 
 const originalGitHubWorkspace = process.env['GITHUB_WORKSPACE']
 const gitHubWorkspace = path.resolve('/checkout-tests/workspace')
@@ -12,42 +15,69 @@ const gitHubWorkspace = path.resolve('/checkout-tests/workspace')
 // Inputs for mock @actions/core
 let inputs = {} as any
 
-// Shallow clone original @actions/github context
-let originalContext = {...github.context}
+// Mutable mock github context
+const mockGithubContext: any = {
+  ref: 'refs/heads/some-ref',
+  sha: '1234567890123456789012345678901234567890',
+  repo: {owner: 'some-owner', repo: 'some-repo'},
+  eventName: '',
+  payload: {}
+}
+
+// Replicate @actions/core getInput behavior: it trims whitespace by default
+// (String.prototype.trim(), which strips characters such as a leading U+FEFF BOM)
+// unless trimWhitespace is explicitly set to false.
+const getInputImpl = (name: string, options?: {trimWhitespace?: boolean}) => {
+  const val = inputs[name] ?? ''
+  if (options && options.trimWhitespace === false) {
+    return val
+  }
+  return typeof val === 'string' ? val.trim() : val
+}
+
+// Mock @actions/core before loading input-helper
+jest.unstable_mockModule('@actions/core', () => ({
+  getInput: jest.fn(getInputImpl),
+  getBooleanInput: jest.fn((name: string) => inputs[name]),
+  getMultilineInput: jest.fn((name: string) =>
+    inputs[name] ? String(inputs[name]).split('\n').filter(Boolean) : []
+  ),
+  error: jest.fn(),
+  warning: jest.fn(),
+  info: jest.fn(),
+  debug: jest.fn(),
+  setFailed: jest.fn(),
+  setOutput: jest.fn(),
+  setSecret: jest.fn()
+}))
+
+// Mock @actions/github before loading input-helper
+jest.unstable_mockModule('@actions/github', () => ({
+  context: mockGithubContext,
+  getOctokit: jest.fn()
+}))
+
+// Mock fs-helper
+const mockDirectoryExistsSync = jest.fn((p: string) => p === gitHubWorkspace)
+jest.unstable_mockModule('../src/fs-helper.js', () => ({
+  directoryExistsSync: mockDirectoryExistsSync,
+  fileExistsSync: jest.fn()
+}))
+
+// Mock workflow-context-helper
+const mockGetOrganizationId = jest.fn(async () => 123456)
+jest.unstable_mockModule('../src/workflow-context-helper.js', () => ({
+  getOrganizationId: mockGetOrganizationId
+}))
+
+// Dynamic imports after mocking
+const core = await import('@actions/core')
+const inputHelper = await import('../src/input-helper.js')
+type IGitSourceSettings =
+  import('../src/git-source-settings.js').IGitSourceSettings
 
 describe('input-helper tests', () => {
   beforeAll(() => {
-    // Mock getInput
-    jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
-      return inputs[name]
-    })
-
-    // Mock error/warning/info/debug
-    jest.spyOn(core, 'error').mockImplementation(jest.fn())
-    jest.spyOn(core, 'warning').mockImplementation(jest.fn())
-    jest.spyOn(core, 'info').mockImplementation(jest.fn())
-    jest.spyOn(core, 'debug').mockImplementation(jest.fn())
-
-    // Mock github context
-    jest.spyOn(github.context, 'repo', 'get').mockImplementation(() => {
-      return {
-        owner: 'some-owner',
-        repo: 'some-repo'
-      }
-    })
-    github.context.ref = 'refs/heads/some-ref'
-    github.context.sha = '1234567890123456789012345678901234567890'
-
-    // Mock ./fs-helper directoryExistsSync()
-    jest
-      .spyOn(fsHelper, 'directoryExistsSync')
-      .mockImplementation((path: string) => path == gitHubWorkspace)
-
-    // Mock ./workflowContextHelper getOrganizationId()
-    jest
-      .spyOn(workflowContextHelper, 'getOrganizationId')
-      .mockImplementation(() => Promise.resolve(123456))
-
     // GitHub workspace
     process.env['GITHUB_WORKSPACE'] = gitHubWorkspace
   })
@@ -55,6 +85,13 @@ describe('input-helper tests', () => {
   beforeEach(() => {
     // Reset inputs
     inputs = {}
+    jest.clearAllMocks()
+    // Re-apply default mocks
+    ;(core.getInput as jest.Mock<any>).mockImplementation(getInputImpl as any)
+    mockDirectoryExistsSync.mockImplementation(
+      (p: string) => p === gitHubWorkspace
+    )
+    mockGetOrganizationId.mockResolvedValue(123456)
   })
 
   afterAll(() => {
@@ -65,11 +102,8 @@ describe('input-helper tests', () => {
     }
 
     // Restore @actions/github context
-    github.context.ref = originalContext.ref
-    github.context.sha = originalContext.sha
-
-    // Restore
-    jest.restoreAllMocks()
+    mockGithubContext.ref = 'refs/heads/some-ref'
+    mockGithubContext.sha = '1234567890123456789012345678901234567890'
   })
 
   it('sets defaults', async () => {
@@ -91,18 +125,19 @@ describe('input-helper tests', () => {
     expect(settings.repositoryOwner).toBe('some-owner')
     expect(settings.repositoryPath).toBe(gitHubWorkspace)
     expect(settings.setSafeDirectory).toBe(true)
+    expect(settings.allowUnsafePrCheckout).toBe(false)
   })
 
   it('qualifies ref', async () => {
-    let originalRef = github.context.ref
+    let originalRef = mockGithubContext.ref
     try {
-      github.context.ref = 'some-unqualified-ref'
+      mockGithubContext.ref = 'some-unqualified-ref'
       const settings: IGitSourceSettings = await inputHelper.getInputs()
       expect(settings).toBeTruthy()
       expect(settings.commit).toBe('1234567890123456789012345678901234567890')
       expect(settings.ref).toBe('refs/heads/some-unqualified-ref')
     } finally {
-      github.context.ref = originalRef
+      mockGithubContext.ref = originalRef
     }
   })
 
@@ -150,8 +185,84 @@ describe('input-helper tests', () => {
     expect(settings.commit).toBeFalsy()
   })
 
+  it('does not reclassify a ref as sha when a BOM is prefixed', async () => {
+    // A fork branch named "<U+FEFF>" + 40 hex chars. core.getInput trims the
+    // BOM by default, which previously collapsed this into a bare SHA and
+    // bypassed the unsafe fork PR checkout guard.
+    inputs.ref = '\uFEFF522d932fae5296da51fdf431934425ecf891c6a2'
+    const settings: IGitSourceSettings = await inputHelper.getInputs()
+    expect(settings.commit).toBeFalsy()
+    expect(settings.ref).toBe('522d932fae5296da51fdf431934425ecf891c6a2')
+  })
+
+  it('does not reclassify a sha-256 ref as sha when a BOM is prefixed', async () => {
+    inputs.ref =
+      '\uFEFF1111111111222222222233333333334444444444555555555566666666667777'
+    const settings: IGitSourceSettings = await inputHelper.getInputs()
+    expect(settings.commit).toBeFalsy()
+    expect(settings.ref).toBe(
+      '1111111111222222222233333333334444444444555555555566666666667777'
+    )
+  })
+
+  it('treats a sha surrounded by ascii whitespace as a commit', async () => {
+    // ASCII whitespace can only come from the workflow author's YAML (git ref
+    // names cannot contain it), so trimming it and treating the value as a
+    // commit is safe.
+    inputs.ref = '  1111111111222222222233333333334444444444  '
+    const settings: IGitSourceSettings = await inputHelper.getInputs()
+    expect(settings.ref).toBeFalsy()
+    expect(settings.commit).toBe('1111111111222222222233333333334444444444')
+  })
+
   it('sets workflow organization ID', async () => {
     const settings: IGitSourceSettings = await inputHelper.getInputs()
     expect(settings.workflowOrganizationId).toBe(123456)
   })
+
+  describe('unsafe PR checkout guard', () => {
+    const forkPayload = {
+      repository: {id: 100},
+      pull_request: {
+        head: {
+          sha: '1234567890123456789012345678901234567890',
+          repo: {id: 200, full_name: 'attacker/fork'}
+        },
+        merge_commit_sha: 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
+      }
+    }
+
+    it('allows the default self-checkout on a fork pull_request_target', async () => {
+      const originalEvent = mockGithubContext.eventName
+      const originalPayload = mockGithubContext.payload
+      try {
+        mockGithubContext.eventName = 'pull_request_target'
+        mockGithubContext.payload = forkPayload
+        // Simulate a rebase/fast-forward merge where the base tip (event SHA)
+        // equals the PR head SHA. The default self-checkout must still succeed.
+        mockGithubContext.sha = '1234567890123456789012345678901234567890'
+        const settings: IGitSourceSettings = await inputHelper.getInputs()
+        expect(settings.commit).toBe('1234567890123456789012345678901234567890')
+      } finally {
+        mockGithubContext.eventName = originalEvent
+        mockGithubContext.payload = originalPayload
+      }
+    })
+
+    it('refuses an explicit fork repository on pull_request_target', async () => {
+      const originalEvent = mockGithubContext.eventName
+      const originalPayload = mockGithubContext.payload
+      try {
+        mockGithubContext.eventName = 'pull_request_target'
+        mockGithubContext.payload = forkPayload
+        inputs.repository = 'attacker/fork'
+        await expect(inputHelper.getInputs()).rejects.toThrow(
+          /Refusing to check out fork pull request code/
+        )
+      } finally {
+        mockGithubContext.eventName = originalEvent
+        mockGithubContext.payload = originalPayload
+      }
+    })
+  })
 })

__test__/ref-helper.test.ts

@@ -1,8 +1,36 @@
+import {jest, describe, it, expect, beforeEach, afterEach} from '@jest/globals'
 import * as assert from 'assert'
-import * as core from '@actions/core'
-import * as github from '@actions/github'
-import * as refHelper from '../lib/ref-helper'
-import {IGitCommandManager} from '../lib/git-command-manager'
+
+// Mutable mock github context
+const mockGithubContext: any = {
+  eventName: '',
+  payload: {},
+  repo: {owner: 'some-owner', repo: 'some-repo'},
+  ref: '',
+  sha: ''
+}
+
+// Mock @actions/core
+const mockDebug = jest.fn()
+jest.unstable_mockModule('@actions/core', () => ({
+  debug: mockDebug,
+  info: jest.fn(),
+  warning: jest.fn(),
+  error: jest.fn(),
+  setFailed: jest.fn()
+}))
+
+// Mock @actions/github
+const mockGetOctokit = jest.fn()
+jest.unstable_mockModule('@actions/github', () => ({
+  context: mockGithubContext,
+  getOctokit: mockGetOctokit
+}))
+
+// Dynamic imports after mocking
+const refHelper = await import('../src/ref-helper.js')
+type IGitCommandManager =
+  import('../src/git-command-manager.js').IGitCommandManager
 
 const commit = '1234567890123456789012345678901234567890'
 const sha256Commit =
@@ -12,6 +40,7 @@ let git: IGitCommandManager
 describe('ref-helper tests', () => {
   beforeEach(() => {
     git = {} as unknown as IGitCommandManager
+    jest.clearAllMocks()
   })
 
   it('getCheckoutInfo requires git', async () => {
@@ -166,14 +195,12 @@ describe('ref-helper tests', () => {
   })
 
   it('getRefSpec sha + refs/tags/ with fetchTags', async () => {
-    // When fetchTags is true, only include tags wildcard (specific tag is redundant)
     const refSpec = refHelper.getRefSpec('refs/tags/my-tag', commit, true)
     expect(refSpec.length).toBe(1)
     expect(refSpec[0]).toBe('+refs/tags/*:refs/tags/*')
   })
 
   it('getRefSpec sha + refs/heads/ with fetchTags', async () => {
-    // When fetchTags is true, include both the branch refspec and tags wildcard
     const refSpec = refHelper.getRefSpec('refs/heads/my/branch', commit, true)
     expect(refSpec.length).toBe(2)
     expect(refSpec[0]).toBe('+refs/tags/*:refs/tags/*')
@@ -194,7 +221,6 @@ describe('ref-helper tests', () => {
   })
 
   it('getRefSpec unqualified ref only with fetchTags', async () => {
-    // When fetchTags is true, skip specific tag pattern since wildcard covers all
     const refSpec = refHelper.getRefSpec('my-ref', '', true)
     expect(refSpec.length).toBe(2)
     expect(refSpec[0]).toBe('+refs/tags/*:refs/tags/*')
@@ -222,14 +248,12 @@ describe('ref-helper tests', () => {
   })
 
   it('getRefSpec refs/tags/ only with fetchTags', async () => {
-    // When fetchTags is true, only include tags wildcard (specific tag is redundant)
     const refSpec = refHelper.getRefSpec('refs/tags/my-tag', '', true)
     expect(refSpec.length).toBe(1)
     expect(refSpec[0]).toBe('+refs/tags/*:refs/tags/*')
   })
 
   it('getRefSpec refs/heads/ only with fetchTags', async () => {
-    // When fetchTags is true, include both the branch refspec and tags wildcard
     const refSpec = refHelper.getRefSpec('refs/heads/my/branch', '', true)
     expect(refSpec.length).toBe(2)
     expect(refSpec[0]).toBe('+refs/tags/*:refs/tags/*')
@@ -248,9 +272,7 @@ describe('ref-helper tests', () => {
       '1111111111222222222233333333334444444444555555555566666666667777'
     const sha256Base =
       'aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff0000'
-    let debugSpy: jest.SpyInstance
-    let getOctokitSpy: jest.SpyInstance
-    let repoGetSpy: jest.Mock
+    let repoGetSpy: jest.Mock<any>
     let originalEventName: string
     let originalPayload: unknown
     let originalRef: string
@@ -261,10 +283,10 @@ describe('ref-helper tests', () => {
       expectedBaseSha: string,
       mergeCommit: string
     ): void {
-      ;(github.context as any).eventName = 'pull_request'
-      github.context.ref = ref
-      github.context.sha = mergeCommit
-      ;(github.context as any).payload = {
+      mockGithubContext.eventName = 'pull_request'
+      mockGithubContext.ref = ref
+      mockGithubContext.sha = mergeCommit
+      mockGithubContext.payload = {
         action: 'synchronize',
         after: expectedHeadSha,
         number: 123,
@@ -280,18 +302,18 @@ describe('ref-helper tests', () => {
     }
 
     beforeEach(() => {
-      originalEventName = github.context.eventName
-      originalPayload = github.context.payload
-      originalRef = github.context.ref
-      originalSha = github.context.sha
+      originalEventName = mockGithubContext.eventName
+      originalPayload = mockGithubContext.payload
+      originalRef = mockGithubContext.ref
+      originalSha = mockGithubContext.sha
 
-      jest.spyOn(github.context, 'repo', 'get').mockReturnValue({
+      mockGithubContext.repo = {
         owner: repositoryOwner,
         repo: repositoryName
-      })
-      debugSpy = jest.spyOn(core, 'debug').mockImplementation(jest.fn())
+      }
+
       repoGetSpy = jest.fn(async () => ({}))
-      getOctokitSpy = jest.spyOn(github, 'getOctokit').mockReturnValue({
+      mockGetOctokit.mockReturnValue({
         rest: {
           repos: {
             get: repoGetSpy
@@ -301,11 +323,11 @@ describe('ref-helper tests', () => {
     })
 
     afterEach(() => {
-      ;(github.context as any).eventName = originalEventName
-      ;(github.context as any).payload = originalPayload
-      github.context.ref = originalRef
-      github.context.sha = originalSha
-      jest.restoreAllMocks()
+      mockGithubContext.eventName = originalEventName
+      mockGithubContext.payload = originalPayload
+      mockGithubContext.ref = originalRef
+      mockGithubContext.sha = originalSha
+      jest.clearAllMocks()
     })
 
     it('returns early for SHA-1 merge commit', async () => {
@@ -320,7 +342,7 @@ describe('ref-helper tests', () => {
         commit
       )
 
-      expect(getOctokitSpy).not.toHaveBeenCalled()
+      expect(mockGetOctokit).not.toHaveBeenCalled()
       expect(repoGetSpy).not.toHaveBeenCalled()
     })
 
@@ -338,7 +360,7 @@ describe('ref-helper tests', () => {
         sha256Commit
       )
 
-      expect(getOctokitSpy).toHaveBeenCalledWith(
+      expect(mockGetOctokit).toHaveBeenCalledWith(
         'token',
         expect.objectContaining({
           userAgent: expect.stringContaining(
@@ -350,10 +372,10 @@ describe('ref-helper tests', () => {
         owner: repositoryOwner,
         repo: repositoryName
       })
-      expect(debugSpy).toHaveBeenCalledWith(
+      expect(mockDebug).toHaveBeenCalledWith(
         `Expected head sha ${sha256Head}; actual head sha ${actualHeadSha}`
       )
-      expect(debugSpy).not.toHaveBeenCalledWith('Unexpected message format')
+      expect(mockDebug).not.toHaveBeenCalledWith('Unexpected message format')
     })
 
     it('does not match 50-char hex as a valid merge', async () => {
@@ -370,9 +392,9 @@ describe('ref-helper tests', () => {
         commit
       )
 
-      expect(getOctokitSpy).not.toHaveBeenCalled()
+      expect(mockGetOctokit).not.toHaveBeenCalled()
       expect(repoGetSpy).not.toHaveBeenCalled()
-      expect(debugSpy).toHaveBeenCalledWith('Unexpected message format')
+      expect(mockDebug).toHaveBeenCalledWith('Unexpected message format')
     })
   })
 })

__test__/retry-helper.test.ts

@@ -1,16 +1,32 @@
-import * as core from '@actions/core'
-import {RetryHelper} from '../lib/retry-helper'
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  beforeEach,
+  afterAll
+} from '@jest/globals'
+
+let info: string[] = []
+
+// Mock @actions/core before loading retry-helper
+jest.unstable_mockModule('@actions/core', () => ({
+  info: jest.fn((message: string) => {
+    info.push(message)
+  }),
+  debug: jest.fn(),
+  warning: jest.fn(),
+  error: jest.fn()
+}))
+
+// Dynamic imports after mocking
+const {RetryHelper} = await import('../src/retry-helper.js')
 
-let info: string[]
 let retryHelper: any
 
 describe('retry-helper tests', () => {
   beforeAll(() => {
-    // Mock @actions/core info()
-    jest.spyOn(core, 'info').mockImplementation((message: string) => {
-      info.push(message)
-    })
-
     retryHelper = new RetryHelper(3, 0, 0)
   })
 
@@ -20,7 +36,6 @@ describe('retry-helper tests', () => {
   })
 
   afterAll(() => {
-    // Restore
     jest.restoreAllMocks()
   })
 

__test__/unsafe-pr-checkout-helper.test.ts

@@ -0,0 +1,284 @@
+import {
+  jest,
+  describe,
+  it,
+  expect,
+  beforeAll,
+  afterEach,
+  afterAll
+} from '@jest/globals'
+
+const BASE_REPO_ID = 100
+const FORK_REPO_ID = 200
+const PR_HEAD_SHA = '1111111111111111111111111111111111111111'
+const PR_MERGE_SHA = '2222222222222222222222222222222222222222'
+const SAFE_BASE_SHA = '3333333333333333333333333333333333333333'
+const WORKFLOW_RUN_HEAD_COMMIT_SHA = '4444444444444444444444444444444444444444'
+const BASE_QUALIFIED_REPO = 'some-owner/some-repo'
+const FORK_QUALIFIED_REPO = 'another-repo/fork'
+
+// Mutable mock context
+const mockContext: any = {
+  eventName: '',
+  payload: {},
+  repo: {owner: 'some-owner', repo: 'some-repo'},
+  ref: '',
+  sha: ''
+}
+
+jest.unstable_mockModule('@actions/github', () => ({
+  context: mockContext
+}))
+
+// Dynamic imports after mocking
+const {assertSafePrCheckout} =
+  await import('../src/unsafe-pr-checkout-helper.js')
+
+const originalEventName = mockContext.eventName
+const originalPayload = mockContext.payload
+
+function setContext(eventName: string, payload: object): void {
+  mockContext.eventName = eventName
+  mockContext.payload = payload
+}
+
+function forkPullRequestTargetPayload(): object {
+  return {
+    repository: {id: BASE_REPO_ID},
+    pull_request: {
+      head: {
+        sha: PR_HEAD_SHA,
+        repo: {id: FORK_REPO_ID, full_name: FORK_QUALIFIED_REPO}
+      },
+      merge_commit_sha: PR_MERGE_SHA
+    }
+  }
+}
+
+function sameRepoPullRequestTargetPayload(): object {
+  return {
+    repository: {id: BASE_REPO_ID},
+    pull_request: {
+      head: {
+        sha: PR_HEAD_SHA,
+        repo: {id: BASE_REPO_ID, full_name: BASE_QUALIFIED_REPO}
+      },
+      merge_commit_sha: PR_MERGE_SHA
+    }
+  }
+}
+
+function forkWorkflowRunPayload(): object {
+  return {
+    repository: {id: BASE_REPO_ID},
+    workflow_run: {
+      event: 'pull_request',
+      head_commit: {id: WORKFLOW_RUN_HEAD_COMMIT_SHA},
+      head_repository: {id: FORK_REPO_ID, full_name: FORK_QUALIFIED_REPO}
+    }
+  }
+}
+
+describe('unsafe-pr-checkout-helper', () => {
+  beforeAll(() => {
+    mockContext.repo = {owner: 'some-owner', repo: 'some-repo'}
+  })
+
+  afterEach(() => {
+    mockContext.eventName = originalEventName
+    mockContext.payload = originalPayload
+  })
+
+  afterAll(() => {
+    mockContext.eventName = originalEventName
+    mockContext.payload = originalPayload
+  })
+
+  it('allows pull_request events untouched', () => {
+    setContext('pull_request', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: 'attacker/fork',
+        ref: 'refs/pull/1/merge',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).not.toThrow()
+  })
+
+  it('allows pull_request_target default checkout (base branch)', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: 'refs/heads/main',
+        commit: SAFE_BASE_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).not.toThrow()
+  })
+
+  it('allows same-repo pull_request_target checkout of PR head', () => {
+    setContext('pull_request_target', sameRepoPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: PR_HEAD_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).not.toThrow()
+  })
+
+  it('refuses pull_request_target fork PR head SHA checkout', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: PR_HEAD_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow(/Refusing to check out fork pull request code/)
+  })
+
+  it('refuses pull_request_target fork PR merge_commit_sha checkout', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: PR_MERGE_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow(/allow-unsafe-pr-checkout/)
+  })
+
+  it('refuses pull_request_target fork PR ref pattern (head)', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: 'refs/pull/42/head',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('refuses pull_request_target fork PR ref pattern (merge)', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: 'refs/pull/42/merge',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('refuses pull_request_target when repository points at the fork', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: FORK_QUALIFIED_REPO,
+        ref: 'refs/heads/main',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('allows pull_request_target checkout of an unrelated third-party repo', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: 'some-other/unrelated',
+        ref: 'refs/heads/main',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).not.toThrow()
+  })
+
+  it('refuses pull_request_target ignoring repository case differences', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: FORK_QUALIFIED_REPO.toUpperCase(),
+        ref: '',
+        commit: '',
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('refuses pull_request_target ignoring commit SHA case differences', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: PR_HEAD_SHA.toUpperCase(),
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('allows pull_request_target fork PR checkout when opted in', () => {
+    setContext('pull_request_target', forkPullRequestTargetPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: 'refs/pull/42/merge',
+        commit: '',
+        allowUnsafePrCheckout: true
+      })
+    ).not.toThrow()
+  })
+
+  it('refuses workflow_run fork PR head_commit.id checkout', () => {
+    setContext('workflow_run', forkWorkflowRunPayload())
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: WORKFLOW_RUN_HEAD_COMMIT_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('refuses workflow_run with pull_request_target underlying event', () => {
+    const payload = forkWorkflowRunPayload() as {
+      workflow_run: {event: string}
+    }
+    payload.workflow_run.event = 'pull_request_target'
+    setContext('workflow_run', payload)
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: WORKFLOW_RUN_HEAD_COMMIT_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).toThrow()
+  })
+
+  it('allows workflow_run same-repo PR (head_repository.id matches base)', () => {
+    const payload = forkWorkflowRunPayload() as {
+      workflow_run: {head_repository: {id: number}}
+    }
+    payload.workflow_run.head_repository.id = BASE_REPO_ID
+    setContext('workflow_run', payload)
+    expect(() =>
+      assertSafePrCheckout({
+        qualifiedRepository: BASE_QUALIFIED_REPO,
+        ref: '',
+        commit: WORKFLOW_RUN_HEAD_COMMIT_SHA,
+        allowUnsafePrCheckout: false
+      })
+    ).not.toThrow()
+  })
+})

__test__/url-helper.test.ts

@@ -1,4 +1,5 @@
-import * as urlHelper from '../src/url-helper'
+import {jest, describe, it, expect, beforeEach, afterAll} from '@jest/globals'
+import * as urlHelper from '../src/url-helper.js'
 
 describe('getServerUrl tests', () => {
   it('basics', async () => {

action.yml

@@ -98,6 +98,15 @@ inputs:
   github-server-url:
     description: The base URL for the GitHub instance that you are trying to clone from, will use environment defaults to fetch from the same instance that the workflow is running from unless specified. Example URLs are https://github.com or https://my-ghes-server.example.com
     required: false
+  allow-unsafe-pr-checkout:
+    description: >
+      Required to check out fork pull request code from a workflow triggered by
+      `pull_request_target` or `workflow_run`. These workflows run with the
+      base repository's GITHUB_TOKEN, secrets, default-branch cache scope, and
+      runner access; fetching and executing a fork's code in that trusted
+      context commonly leads to "pwn request" vulnerabilities. Set to `true`
+      only after reviewing the risks at https://gh.io/securely-using-pull_request_target.
+    default: false
 outputs:
   ref:
     description: 'The branch, tag or SHA that was checked out'

dist/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

eslint.config.mjs

@@ -0,0 +1,62 @@
+import github from 'eslint-plugin-github'
+import jest from 'eslint-plugin-jest'
+
+const githubConfigs = github.getFlatConfigs()
+
+export default [
+  {
+    ignores: ['**/node_modules/**', '**/lib/**', '**/dist/**']
+  },
+  githubConfigs.recommended,
+  ...githubConfigs.typescript,
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parserOptions: {
+        project: './tsconfig.json'
+      }
+    },
+    rules: {
+      'eslint-comments/no-use': 'off',
+      'import/no-namespace': 'off',
+      'no-unused-vars': 'off',
+      '@typescript-eslint/no-unused-vars': 'error',
+      '@typescript-eslint/explicit-member-accessibility': [
+        'error',
+        {accessibility: 'no-public'}
+      ],
+      '@typescript-eslint/no-require-imports': 'error',
+      '@typescript-eslint/array-type': 'error',
+      '@typescript-eslint/await-thenable': 'error',
+      camelcase: 'off',
+      '@typescript-eslint/explicit-function-return-type': [
+        'error',
+        {allowExpressions: true}
+      ],
+      '@typescript-eslint/no-array-constructor': 'error',
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-extraneous-class': 'error',
+      '@typescript-eslint/no-floating-promises': 'error',
+      '@typescript-eslint/no-for-in-array': 'error',
+      '@typescript-eslint/no-inferrable-types': 'error',
+      '@typescript-eslint/no-misused-new': 'error',
+      '@typescript-eslint/no-namespace': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'warn',
+      '@typescript-eslint/no-unnecessary-qualifier': 'error',
+      '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+      '@typescript-eslint/no-useless-constructor': 'error',
+      '@typescript-eslint/prefer-for-of': 'warn',
+      '@typescript-eslint/prefer-function-type': 'warn',
+      '@typescript-eslint/prefer-includes': 'error',
+      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
+      '@typescript-eslint/promise-function-async': 'error',
+      '@typescript-eslint/require-array-sort-compare': 'error',
+      '@typescript-eslint/restrict-plus-operands': 'error',
+      '@typescript-eslint/unbound-method': 'error'
+    }
+  },
+  {
+    files: ['__test__/**/*.ts'],
+    ...jest.configs['flat/recommended']
+  }
+]

jest.config.js

@@ -1,12 +0,0 @@
-module.exports = {
-  clearMocks: true,
-  fakeTimers: {},
-  moduleFileExtensions: ['js', 'ts'],
-  testEnvironment: 'node',
-  testMatch: ['**/*.test.ts'],
-  testRunner: 'jest-circus/runner',
-  transform: {
-    '^.+\\.ts$': 'ts-jest'
-  },
-  verbose: true
-}

jest.config.ts

@@ -0,0 +1,24 @@
+export default {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  roots: ['<rootDir>'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  transform: {
+    '^.+\\.ts$': [
+      'ts-jest',
+      {
+        useESM: true,
+        diagnostics: {
+          ignoreCodes: [151002]
+        }
+      }
+    ]
+  },
+  extensionsToTreatAsEsm: ['.ts'],
+  transformIgnorePatterns: ['node_modules/(?!(@actions)/)'],
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1'
+  },
+  verbose: true
+}

package.json

@@ -1,14 +1,15 @@
 {
   "name": "checkout",
-  "version": "5.0.0",
+  "version": "7.0.1",
   "description": "checkout action",
+  "type": "module",
   "main": "lib/main.js",
   "scripts": {
-    "build": "tsc && ncc build && node lib/misc/generate-docs.js",
+    "build": "tsc && ncc build src/main.ts -o dist && node lib/misc/generate-docs.js",
     "format": "prettier --write '**/*.ts'",
     "format-check": "prettier --check '**/*.ts'",
     "lint": "eslint src/**/*.ts",
-    "test": "jest",
+    "test": "node --experimental-vm-modules node_modules/jest/bin/jest.js",
     "licensed-check": "src/misc/licensed-check.sh",
     "licensed-generate": "src/misc/licensed-generate.sh"
   },
@@ -27,29 +28,30 @@
     "url": "https://github.com/actions/checkout/issues"
   },
   "homepage": "https://github.com/actions/checkout#readme",
+  "engines": {
+    "node": ">=24"
+  },
   "dependencies": {
-    "@actions/core": "^1.10.1",
-    "@actions/exec": "^1.1.1",
-    "@actions/github": "^6.0.0",
-    "@actions/io": "^1.1.3",
-    "@actions/tool-cache": "^2.0.1",
-    "uuid": "^9.0.1"
+    "@actions/core": "^3.0.1",
+    "@actions/exec": "^3.0.0",
+    "@actions/github": "^9.1.1",
+    "@actions/io": "^3.0.2",
+    "@actions/tool-cache": "^4.0.0"
   },
   "devDependencies": {
     "@types/jest": "^29.5.12",
     "@types/node": "^24.1.0",
-    "@types/uuid": "^9.0.8",
-    "@typescript-eslint/eslint-plugin": "^7.9.0",
-    "@typescript-eslint/parser": "^7.9.0",
-    "@vercel/ncc": "^0.38.1",
-    "eslint": "^8.57.0",
-    "eslint-plugin-github": "^4.10.2",
-    "eslint-plugin-jest": "^28.8.2",
+    "@typescript-eslint/eslint-plugin": "^8.54.0",
+    "@typescript-eslint/parser": "^8.54.0",
+    "@vercel/ncc": "^0.44.0",
+    "eslint": "^9.39.2",
+    "eslint-plugin-github": "^6.0.0",
+    "eslint-plugin-jest": "^29.12.1",
     "jest": "^29.7.0",
-    "jest-circus": "^29.7.0",
-    "js-yaml": "^4.1.0",
-    "prettier": "^3.3.3",
-    "ts-jest": "^29.2.5",
+    "js-yaml": "^4.2.0",
+    "prettier": "^3.8.4",
+    "ts-jest": "^29.4.11",
+    "ts-node": "^10.9.2",
     "typescript": "^5.5.4"
   }
 }

src/git-auth-helper.ts

@@ -5,12 +5,12 @@ import * as fs from 'fs'
 import * as io from '@actions/io'
 import * as os from 'os'
 import * as path from 'path'
-import * as regexpHelper from './regexp-helper'
-import * as stateHelper from './state-helper'
-import * as urlHelper from './url-helper'
-import {v4 as uuid} from 'uuid'
-import {IGitCommandManager} from './git-command-manager'
-import {IGitSourceSettings} from './git-source-settings'
+import * as regexpHelper from './regexp-helper.js'
+import * as stateHelper from './state-helper.js'
+import * as urlHelper from './url-helper.js'
+import {randomUUID} from 'crypto'
+import {IGitCommandManager} from './git-command-manager.js'
+import {IGitSourceSettings} from './git-source-settings.js'
 
 const IS_WINDOWS = process.platform === 'win32'
 const SSH_COMMAND_KEY = 'core.sshCommand'
@@ -90,7 +90,7 @@ class GitAuthHelper {
     // Create a temp home directory
     const runnerTemp = process.env['RUNNER_TEMP'] || ''
     assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
-    const uniqueId = uuid()
+    const uniqueId = randomUUID()
     this.temporaryHomePath = path.join(runnerTemp, uniqueId)
     await fs.promises.mkdir(this.temporaryHomePath, {recursive: true})
 
@@ -255,7 +255,7 @@ class GitAuthHelper {
     // Write key
     const runnerTemp = process.env['RUNNER_TEMP'] || ''
     assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
-    const uniqueId = uuid()
+    const uniqueId = randomUUID()
     this.sshKeyPath = path.join(runnerTemp, uniqueId)
     stateHelper.setSshKeyPath(this.sshKeyPath)
     await fs.promises.mkdir(runnerTemp, {recursive: true})
@@ -422,7 +422,7 @@ class GitAuthHelper {
     assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
 
     // Create a unique filename for this checkout instance
-    const configFileName = `git-credentials-${uuid()}.config`
+    const configFileName = `git-credentials-${randomUUID()}.config`
     this.credentialsConfigPath = path.join(runnerTemp, configFileName)
 
     core.debug(`Credentials config path: ${this.credentialsConfigPath}`)

src/git-command-manager.ts

@@ -1,13 +1,13 @@
 import * as core from '@actions/core'
 import * as exec from '@actions/exec'
 import * as fs from 'fs'
-import * as fshelper from './fs-helper'
+import * as fshelper from './fs-helper.js'
 import * as io from '@actions/io'
 import * as path from 'path'
-import * as refHelper from './ref-helper'
-import * as regexpHelper from './regexp-helper'
-import * as retryHelper from './retry-helper'
-import {GitVersion} from './git-version'
+import * as refHelper from './ref-helper.js'
+import * as regexpHelper from './regexp-helper.js'
+import * as retryHelper from './retry-helper.js'
+import {GitVersion} from './git-version.js'
 
 // Auth header not supported before 2.9
 // Wire protocol v2 not supported before 2.18
@@ -510,7 +510,7 @@ class GitCommandManager {
     } else {
       args.push(globalConfig ? '--global' : '--local')
     }
-    args.push('--unset', configKey, configValue)
+    args.push('--unset', configKey, regexpHelper.escape(configValue))
 
     const output = await this.execGit(args, true)
     return output.exitCode === 0

src/git-directory-helper.ts

@@ -1,10 +1,10 @@
 import * as assert from 'assert'
 import * as core from '@actions/core'
 import * as fs from 'fs'
-import * as fsHelper from './fs-helper'
+import * as fsHelper from './fs-helper.js'
 import * as io from '@actions/io'
 import * as path from 'path'
-import {IGitCommandManager} from './git-command-manager'
+import {IGitCommandManager} from './git-command-manager.js'
 
 export async function prepareExistingDirectory(
   git: IGitCommandManager | undefined,

src/git-source-provider.ts

@@ -1,19 +1,19 @@
 import * as core from '@actions/core'
-import * as fsHelper from './fs-helper'
-import * as gitAuthHelper from './git-auth-helper'
-import * as gitCommandManager from './git-command-manager'
-import * as gitDirectoryHelper from './git-directory-helper'
-import * as githubApiHelper from './github-api-helper'
+import * as fsHelper from './fs-helper.js'
+import * as gitAuthHelper from './git-auth-helper.js'
+import * as gitCommandManager from './git-command-manager.js'
+import * as gitDirectoryHelper from './git-directory-helper.js'
+import * as githubApiHelper from './github-api-helper.js'
 import * as io from '@actions/io'
 import * as path from 'path'
-import * as refHelper from './ref-helper'
-import * as stateHelper from './state-helper'
-import * as urlHelper from './url-helper'
+import * as refHelper from './ref-helper.js'
+import * as stateHelper from './state-helper.js'
+import * as urlHelper from './url-helper.js'
 import {
   MinimumGitSparseCheckoutVersion,
   IGitCommandManager
-} from './git-command-manager'
-import {IGitSourceSettings} from './git-source-settings'
+} from './git-command-manager.js'
+import {IGitSourceSettings} from './git-source-settings.js'
 
 export async function getSource(settings: IGitSourceSettings): Promise<void> {
   // Repository URL

src/git-source-settings.ts

@@ -118,4 +118,10 @@ export interface IGitSourceSettings {
    * User override on the GitHub Server/Host URL that hosts the repository to be cloned
    */
   githubServerUrl: string | undefined
+
+  /**
+   * Opt-in to allow checking out fork pull request code from a workflow
+   * triggered by pull_request_target or workflow_run.
+   */
+  allowUnsafePrCheckout: boolean
 }

src/github-api-helper.ts

@@ -4,10 +4,10 @@ import * as fs from 'fs'
 import * as github from '@actions/github'
 import * as io from '@actions/io'
 import * as path from 'path'
-import * as retryHelper from './retry-helper'
+import * as retryHelper from './retry-helper.js'
 import * as toolCache from '@actions/tool-cache'
-import {v4 as uuid} from 'uuid'
-import {getServerApiUrl} from './url-helper'
+import {randomUUID} from 'crypto'
+import {getServerApiUrl} from './url-helper.js'
 
 const IS_WINDOWS = process.platform === 'win32'
 
@@ -39,7 +39,7 @@ export async function downloadRepository(
 
   // Write archive to disk
   core.info('Writing archive to disk')
-  const uniqueId = uuid()
+  const uniqueId = randomUUID()
   const archivePath = IS_WINDOWS
     ? path.join(repositoryPath, `${uniqueId}.zip`)
     : path.join(repositoryPath, `${uniqueId}.tar.gz`)

src/input-helper.ts

@@ -1,9 +1,10 @@
 import * as core from '@actions/core'
-import * as fsHelper from './fs-helper'
+import * as fsHelper from './fs-helper.js'
 import * as github from '@actions/github'
 import * as path from 'path'
-import * as workflowContextHelper from './workflow-context-helper'
-import {IGitSourceSettings} from './git-source-settings'
+import * as unsafePrCheckoutHelper from './unsafe-pr-checkout-helper.js'
+import * as workflowContextHelper from './workflow-context-helper.js'
+import {IGitSourceSettings} from './git-source-settings.js'
 
 export async function getInputs(): Promise<IGitSourceSettings> {
   const result = {} as unknown as IGitSourceSettings
@@ -58,6 +59,23 @@ export async function getInputs(): Promise<IGitSourceSettings> {
 
   // Source branch, source version
   result.ref = core.getInput('ref')
+  // core.getInput()'s default trim strips a range of Unicode characters such as a
+  // leading BOM (U+FEFF) or NBSP (U+00A0). Those are valid in a git ref name, so
+  // a fork branch named "<BOM>" + 40 hex chars would trim down to a bare SHA and
+  // be silently reclassified as a commit, bypassing the unsafe fork PR checkout
+  // guard.
+  //
+  // The trim below strips only the ASCII whitespace characters which are all forbidden
+  // in a git branch name.
+  //   \t  U+0009  horizontal tab   - ASCII control, forbidden in ref names
+  //   \n  U+000A  line feed        - ASCII control, forbidden in ref names
+  //   \v  U+000B  vertical tab     - ASCII control, forbidden in ref names
+  //   \f  U+000C  form feed        - ASCII control, forbidden in ref names
+  //   \r  U+000D  carriage return  - ASCII control, forbidden in ref names
+  //   ' ' U+0020  space            - forbidden in ref names
+  const asciiTrimmedRef = core
+    .getInput('ref', {trimWhitespace: false})
+    .replace(/^[\t\n\v\f\r ]+|[\t\n\v\f\r ]+$/g, '')
   if (!result.ref) {
     if (isWorkflowRepository) {
       result.ref = github.context.ref
@@ -71,8 +89,8 @@ export async function getInputs(): Promise<IGitSourceSettings> {
     }
   }
   // SHA?
-  else if (result.ref.match(/^(?:[0-9a-fA-F]{40}|[0-9a-fA-F]{64})$/)) {
-    result.commit = result.ref
+  else if (asciiTrimmedRef.match(/^(?:[0-9a-fA-F]{40}|[0-9a-fA-F]{64})$/)) {
+    result.commit = asciiTrimmedRef
     result.ref = ''
   }
   core.debug(`ref = '${result.ref}'`)
@@ -161,5 +179,25 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   result.githubServerUrl = core.getInput('github-server-url')
   core.debug(`GitHub Host URL = ${result.githubServerUrl}`)
 
+  // Allow unsafe PR checkout (opt-in for pull_request_target / workflow_run fork PRs)
+  result.allowUnsafePrCheckout =
+    (core.getInput('allow-unsafe-pr-checkout') || 'false').toUpperCase() ===
+    'TRUE'
+  core.debug(`allow unsafe PR checkout = ${result.allowUnsafePrCheckout}`)
+
+  // The default self-checkout (this repository with no explicit ref) always
+  // resolves to the trusted ref/commit GitHub set for the triggering event, so
+  // the fork-checkout guard only needs to run when the caller customized the
+  // repository or ref.
+  const isDefaultCheckout = isWorkflowRepository && !core.getInput('ref')
+  if (!isDefaultCheckout) {
+    unsafePrCheckoutHelper.assertSafePrCheckout({
+      qualifiedRepository,
+      ref: result.ref,
+      commit: result.commit,
+      allowUnsafePrCheckout: result.allowUnsafePrCheckout
+    })
+  }
+
   return result
 }

src/main.ts

@@ -1,9 +1,11 @@
 import * as core from '@actions/core'
-import * as coreCommand from '@actions/core/lib/command'
-import * as gitSourceProvider from './git-source-provider'
-import * as inputHelper from './input-helper'
+import * as gitSourceProvider from './git-source-provider.js'
+import * as inputHelper from './input-helper.js'
 import * as path from 'path'
-import * as stateHelper from './state-helper'
+import * as stateHelper from './state-helper.js'
+import {fileURLToPath} from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
 
 async function run(): Promise<void> {
   try {
@@ -11,10 +13,8 @@ async function run(): Promise<void> {
 
     try {
       // Register problem matcher
-      coreCommand.issueCommand(
-        'add-matcher',
-        {},
-        path.join(__dirname, 'problem-matcher.json')
+      core.info(
+        `::add-matcher::${path.join(__dirname, 'problem-matcher.json')}`
       )
 
       // Get sources
@@ -22,7 +22,7 @@ async function run(): Promise<void> {
       core.setOutput('ref', sourceSettings.ref)
     } finally {
       // Unregister problem matcher
-      coreCommand.issueCommand('remove-matcher', {owner: 'checkout-git'}, '')
+      core.info('::remove-matcher owner=checkout-git::')
     }
   } catch (error) {
     core.setFailed(`${(error as any)?.message ?? error}`)

src/misc/generate-docs.ts

@@ -2,6 +2,9 @@ import * as fs from 'fs'
 import * as os from 'os'
 import * as path from 'path'
 import * as yaml from 'js-yaml'
+import {fileURLToPath} from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
 
 //
 // SUMMARY
@@ -120,7 +123,7 @@ function updateUsage(
 }
 
 updateUsage(
-  'actions/checkout@v6',
+  'actions/checkout@v7',
   path.join(__dirname, '..', '..', 'action.yml'),
   path.join(__dirname, '..', '..', 'README.md')
 )

src/ref-helper.ts

@@ -1,7 +1,7 @@
-import {IGitCommandManager} from './git-command-manager'
+import {IGitCommandManager} from './git-command-manager.js'
 import * as core from '@actions/core'
 import * as github from '@actions/github'
-import {getServerApiUrl, isGhes} from './url-helper'
+import {getServerApiUrl, isGhes} from './url-helper.js'
 
 export const tagsRefSpec = '+refs/tags/*:refs/tags/*'
 
@@ -292,7 +292,7 @@ export async function checkCommitInfo(
   }
 }
 
-function fromPayload(path: string): any {
+export function fromPayload(path: string): any {
   return select(github.context.payload, path)
 }
 

src/unsafe-pr-checkout-helper.ts

@@ -0,0 +1,88 @@
+import * as github from '@actions/github'
+import {fromPayload} from './ref-helper.js'
+
+const PR_REF_PATTERN = /^refs\/pull\/[0-9]+\/(?:head|merge)$/
+
+export interface IUnsafePrCheckoutInput {
+  qualifiedRepository: string
+  ref: string
+  commit: string | undefined
+  allowUnsafePrCheckout: boolean
+}
+
+export function assertSafePrCheckout(input: IUnsafePrCheckoutInput): void {
+  if (input.allowUnsafePrCheckout) {
+    return
+  }
+
+  const eventName = github.context.eventName
+  if (eventName !== 'pull_request_target' && eventName !== 'workflow_run') {
+    return
+  }
+
+  const baseRepoId = fromPayload('repository.id')
+  if (typeof baseRepoId !== 'number') {
+    return
+  }
+
+  let prHeadRepoId: unknown
+  let prHeadRepoFullName: unknown
+  const prShas: string[] = []
+
+  if (eventName === 'pull_request_target') {
+    prHeadRepoId = fromPayload('pull_request.head.repo.id')
+    prHeadRepoFullName = fromPayload('pull_request.head.repo.full_name')
+    pushIfSha(prShas, fromPayload('pull_request.head.sha'))
+    pushIfSha(prShas, fromPayload('pull_request.merge_commit_sha'))
+  } else {
+    const wrEvent = fromPayload('workflow_run.event')
+    if (typeof wrEvent !== 'string' || !wrEvent.startsWith('pull_request')) {
+      return
+    }
+    prHeadRepoId = fromPayload('workflow_run.head_repository.id')
+    prHeadRepoFullName = fromPayload('workflow_run.head_repository.full_name')
+    pushIfSha(prShas, fromPayload('workflow_run.head_commit.id'))
+    // For `pull_request_target`-triggered workflow_run, `head_sha` is the base
+    // default branch SHA (not the PR head)
+    if (wrEvent !== 'pull_request_target') {
+      pushIfSha(prShas, fromPayload('workflow_run.head_sha'))
+    }
+  }
+
+  // (A) Fork PR?
+  if (typeof prHeadRepoId !== 'number' || prHeadRepoId === baseRepoId) {
+    return
+  }
+
+  // (B) We cannot check for all fork PR refs so check to see
+  // if the resolved input points to the fork PR sha we have in the payload
+  const repositoryMatchesPrHead =
+    typeof prHeadRepoFullName === 'string' &&
+    input.qualifiedRepository.toLowerCase() === prHeadRepoFullName.toLowerCase()
+  const refMatchesPullPattern = PR_REF_PATTERN.test(input.ref)
+  const commitMatchesPrHeadSha =
+    !!input.commit && prShas.includes(input.commit.toLowerCase())
+
+  if (
+    !repositoryMatchesPrHead &&
+    !refMatchesPullPattern &&
+    !commitMatchesPrHeadSha
+  ) {
+    return
+  }
+
+  throw new Error(
+    `Refusing to check out fork pull request code from a '${eventName}' workflow. ` +
+      `This workflow runs with the base repository's GITHUB_TOKEN, secrets, default-branch ` +
+      `cache scope, and runner access. Fetching and executing a fork's code in that trusted ` +
+      `context commonly leads to "pwn request" vulnerabilities. To opt in, review the risks ` +
+      `at https://gh.io/securely-using-pull_request_target and set 'allow-unsafe-pr-checkout: true' ` +
+      `on the actions/checkout step.`
+  )
+}
+
+function pushIfSha(target: string[], value: unknown): void {
+  if (typeof value === 'string' && value.length > 0) {
+    target.push(value.toLowerCase())
+  }
+}

src/url-helper.ts

@@ -1,6 +1,6 @@
 import * as assert from 'assert'
 import {URL} from 'url'
-import {IGitSourceSettings} from './git-source-settings'
+import {IGitSourceSettings} from './git-source-settings.js'
 
 export function getFetchUrl(settings: IGitSourceSettings): string {
   assert.ok(

tsconfig.json

@@ -1,17 +1,13 @@
 {
   "compilerOptions": {
-    "target": "es6",
-    "module": "commonjs",
-    "lib": [
-      "es6"
-    ],
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
     "outDir": "./lib",
     "rootDir": "./src",
-    "declaration": true,
     "strict": true,
     "noImplicitAny": false,
-    "esModuleInterop": true,
-    "skipLibCheck": true
+    "esModuleInterop": true
   },
-  "exclude": ["__test__", "lib", "node_modules"]
+  "exclude": ["__test__", "lib", "node_modules", "jest.config.ts"]
 }