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security: pin GitHub Actions to immutable SHA hashes #9046

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6b8d480
security: pin GitHub Actions to immutable SHA hashes
Ankitsinghsisodya Apr 22, 2026
279b9f7
ci: document Dependabot for pinned actions and add provenance comments
Ankitsinghsisodya Apr 22, 2026
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9 changes: 6 additions & 3 deletions .github/workflows/kind-e2e.yaml
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Original file line number Diff line number Diff line change
@@ -1,5 +1,8 @@
name: KinD e2e tests

# Third-party actions use immutable SHAs; Dependabot bumps them weekly
# (.github/.dependabot.yaml, package-ecosystem: github-actions).

on:
pull_request:
branches: [ 'main', 'master' ]
Expand Down Expand Up @@ -60,10 +63,10 @@ jobs:

# Install the latest release of ko
- name: Install ko
uses: ko-build/setup-ko@v0.9
uses: ko-build/setup-ko@d006021bd0c28d1ce33a07e7943d48b079944c8d # ko-build/setup-ko@v0.9 — https://github.com/ko-build/setup-ko/releases/tag/v0.9

- name: Check out code onto GOPATH
uses: actions/checkout@v6
uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 — https://github.com/actions/checkout/releases/tag/v6

- name: Install KinD
# TODO: replace with chainguard-dev/actions/setup-kind
Expand Down Expand Up @@ -147,7 +150,7 @@ jobs:
fi

- name: Post failure notice to Slack
uses: rtCamp/action-slack-notify@v2.3.3
uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # rtCamp/action-slack-notify@v2.3.3 — https://github.com/rtCamp/action-slack-notify/releases/tag/v2.3.3
if: ${{ failure() && github.event_name != 'pull_request' }}
env:
SLACK_ICON: https://github.com/knative.png?size=48
Expand Down
7 changes: 5 additions & 2 deletions .github/workflows/knative-downstream.yaml
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Expand Up @@ -14,6 +14,9 @@

name: Downstream

# actions/checkout is pinned to an immutable SHA; Dependabot bumps it weekly
# (.github/.dependabot.yaml, package-ecosystem: github-actions).

on:
pull_request:
branches: [ 'main', 'master' ]
Expand Down Expand Up @@ -57,11 +60,11 @@ jobs:
run: |
go install github.com/google/go-licenses@latest
- name: Checkout Upstream
uses: actions/checkout@v6
uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 — https://github.com/actions/checkout/releases/tag/v6
with:
path: ./src/knative.dev/${{ github.event.repository.name }}
- name: Checkout Downstream
uses: actions/checkout@v6
uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 — https://github.com/actions/checkout/releases/tag/v6
with:
repository: ${{ matrix.org }}/${{ matrix.repo }}
path: ./src/knative.dev/${{ matrix.repo }}
Expand Down
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