Pin GitHub Actions to specific commits for security

.github/workflows/build.yml

@@ -37,7 +37,7 @@ jobs:
     outputs:
       run_tests: ${{ steps.check.outputs.run_tests }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
       - name: Check for source changes
         id: check
         run: |
@@ -68,14 +68,14 @@ jobs:
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
+      - uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435  # v4.5.0
       - name: Install Dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
       - name: Add ccache to PATH
         run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
       - name: Configure ccache action
-        uses: hendrikmuhs/[email protected]
+        uses: hendrikmuhs/ccache-action@ca3acd2731eef11f1572ccb126356c2f9298d35e  # v1.2.9
       - name: Check Autoconf version 2.69 and aclocal 1.16.3
         run: |
           grep "Generated by GNU Autoconf 2.69" configure
@@ -126,7 +126,7 @@ jobs:
     env:
        IncludeUwp: 'true'
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Build CPython
       run: .\PCbuild\build.bat -e -d -p Win32
     - name: Display build info
@@ -143,7 +143,7 @@ jobs:
     env:
        IncludeUwp: 'true'
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register MSVC problem matcher
       run: echo "::add-matcher::.github/problem-matchers/msvc.json"
     - name: Build CPython
@@ -165,7 +165,7 @@ jobs:
       HOMEBREW_NO_INSTALL_CLEANUP: 1
       PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Install Homebrew dependencies
       run: brew install pkg-config [email protected] xz gdbm tcl-tk
     - name: Configure CPython
@@ -194,7 +194,7 @@ jobs:
       OPENSSL_VER: 1.1.1t
       PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -206,7 +206,7 @@ jobs:
         echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
     - name: 'Restore OpenSSL build'
       id: cache-openssl
-      uses: actions/cache@v3
+      uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8  # v3.3.1
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
         key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -217,7 +217,7 @@ jobs:
       run: |
         echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
     - name: Configure ccache action
-      uses: hendrikmuhs/[email protected]
+      uses: hendrikmuhs/ccache-action@ca3acd2731eef11f1572ccb126356c2f9298d35e  # v1.2.9
     - name: Setup directory envs for out-of-tree builds
       run: |
         echo "CPYTHON_RO_SRCDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-ro-srcdir)" >> $GITHUB_ENV
@@ -258,7 +258,7 @@ jobs:
       OPENSSL_DIR: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}
       LD_LIBRARY_PATH: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}/lib
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -270,7 +270,7 @@ jobs:
         echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
     - name: 'Restore OpenSSL build'
       id: cache-openssl
-      uses: actions/cache@v3
+      uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8  # v3.3.1
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
         key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -281,7 +281,7 @@ jobs:
       run: |
         echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
     - name: Configure ccache action
-      uses: hendrikmuhs/[email protected]
+      uses: hendrikmuhs/ccache-action@ca3acd2731eef11f1572ccb126356c2f9298d35e  # v1.2.9
     - name: Configure CPython
       run: ./configure --with-pydebug --with-openssl=$OPENSSL_DIR
     - name: Build CPython
@@ -303,7 +303,7 @@ jobs:
       PYTHONSTRICTEXTENSIONBUILD: 1
       ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -315,7 +315,7 @@ jobs:
         echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
     - name: 'Restore OpenSSL build'
       id: cache-openssl
-      uses: actions/cache@v3
+      uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8  # v3.3.1
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
         key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -326,7 +326,7 @@ jobs:
       run: |
         echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
     - name: Configure ccache action
-      uses: hendrikmuhs/[email protected]
+      uses: hendrikmuhs/ccache-action@ca3acd2731eef11f1572ccb126356c2f9298d35e  # v1.2.9
     - name: Configure CPython
       run: ./configure --with-address-sanitizer --without-pymalloc
     - name: Build CPython

.github/workflows/build_msi.yml

@@ -31,6 +31,6 @@ jobs:
       matrix:
         type: [x86, x64, arm64]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Build CPython installer
       run: .\Tools\msi\build.bat -${{ matrix.type }}

.github/workflows/doc.yml

@@ -38,11 +38,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register Sphinx problem matcher
       run: echo "::add-matcher::.github/problem-matchers/sphinx.json"
     - name: 'Set up Python'
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435  # v4.5.0
       with:
         python-version: '3'
         cache: 'pip'
@@ -57,7 +57,7 @@ jobs:
     # Add pull request annotations for Sphinx nitpicks (missing references)
     - name: 'Get list of changed files'
       id: changed_files
-      uses: Ana06/[email protected]
+      uses: Ana06/get-changed-files@e0c398b7065a8d84700c471b6afc4116d1ba4e96  # v2.2.0
       with:
         filter: "Doc/**"
     - name: 'Build changed files in nit-picky mode'
@@ -83,10 +83,10 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
     - name: Register Sphinx problem matcher
       run: echo "::add-matcher::.github/problem-matchers/sphinx.json"
-    - uses: actions/cache@v3
+    - uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8  # v3.3.1
       with:
         path: ~/.cache/pip
         key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}

.github/workflows/new-bugs-announce-notifier.yml

@@ -13,12 +13,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c  # v3.6.0
         with:
           node-version: 14
       - run: npm install mailgun.js form-data
       - name: Send notification
-        uses: actions/github-script@v6
+        uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410  # v6.4.1
         env:
           MAILGUN_API_KEY: ${{ secrets.MAILGUN_PYTHON_ORG_MAILGUN_KEY }}
         with:

.github/workflows/project-updater.yml

@@ -23,7 +23,7 @@ jobs:
           - { project: 32, label: sprint }
 
     steps:
-      - uses: actions/add-to-project@v0.1.0
+      - uses: actions/add-to-project@31b3f3ccdc584546fc445612dec3f38ff5edb41c  #  v0.5.0
         with:
           project-url: https://github.com/orgs/python/projects/${{ matrix.project }}
           github-token: ${{ secrets.ADD_TO_PROJECT_PAT }}

.github/workflows/require-pr-label.yml

@@ -11,7 +11,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: mheap/github-action-required-labels@v4
+      - uses: mheap/github-action-required-labels@422e4c352ef83db91089e6acfbf09d8725e08abc  # v4
         with:
           mode: exactly
           count: 0

.github/workflows/stale.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: "Check PRs"
-      uses: actions/stale@v8
+      uses: actions/stale@1160a2240286f5da8ec72b1c0816ce2481aabf84  # v8.0.0
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-pr-message: 'This PR is stale because it has been open for 30 days with no activity.'

.github/workflows/verify-ensurepip-wheels.yml

@@ -25,8 +25,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
+      - uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435  # v4.5.0
         with:
           python-version: '3'
       - name: Compare checksum of bundled wheels to the ones published on PyPI