chore(pipelines): improve caching #13
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Published Crossplane PackageThe following Crossplane package was published as part of this PR: Package: ghcr.io/hops-ops/aws-network:pr-13-472b974d3f901cfc1c2c779afeea9ee1ec972638 |
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Actionable comments posted: 8
🤖 Fix all issues with AI agents
In @.github/workflows/on-pr.yaml:
- Line 52: The workflow is using a mutable branch ref in the `uses:` line
("uses:
unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache"),
which risks pulling unreviewed changes; change that ref to a stable tag or
commit SHA (for example replace `@feat/cache` with a release tag like `@v1.2.3`
or a specific commit hash `@<commit-sha>`), and update the workflow to reference
that immutable identifier so the e2e job always runs the pinned version.
- Line 68: The workflow currently references a mutable branch in the reusable
workflow call "uses:
unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@feat/cache";
change that to a fixed, immutable reference such as a release tag or commit SHA
(for example replace "@feat/cache" with "@v1.0.0" or "@<commit-sha>") so the
publish job uses a stable workflow version; update the reference in the same
"uses:" line and ensure the chosen tag/SHA points to the intended release of the
publish.yaml file.
- Line 30: The workflow currently references a mutable branch ref for the
reusable workflow (uses:
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache)
in the validate, test, e2e and publish jobs; replace that branch ref with a
stable tag or specific commit SHA across all four jobs (e.g., change @feat/cache
to @v2.8.0 or @<commit-sha>) so the workflow becomes reproducible and immutable.
- Line 49: The workflow is pinning an external reusable workflow to a mutable
branch reference ("uses:
unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache");
replace that branch ref with an immutable tag or full commit SHA (for example
change "@feat/cache" to a release tag like "@v1.2.3" or a commit SHA) wherever
this pattern appears (including the validate job and other uses lines) so the
reusable workflow is pinned to a stable, auditable revision.
In @.github/workflows/on-push-main.yaml:
- Line 46: The workflow references an external reusable workflow using a mutable
branch ref
"unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache";
replace that mutable branch ref with an immutable version tag (e.g. match the
pattern used by the version-and-tag job such as "@v1.20.2") so the "uses:
unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache" line
(and any other "uses:" lines pointing to branches) uses a fixed tag instead of a
branch name to ensure reproducible runs.
- Line 27: Replace the mutable branch ref "@feat/cache" with a fixed version tag
(for example "@v2.7.0") for all three reusable workflow uses entries so the
main-branch CI is stable; locate the three uses lines that reference
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache
and similarly for the test and e2e jobs (job names "validate", "test", "e2e")
and update each to point to a concrete tag such as "@v2.7.0".
- Line 49: Replace the mutable branch reference
"unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache" with
an immutable version tag (for example "@v1.20.2"); update the "uses:
unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache" entry
and any other occurrences in the workflow (validate/test/e2e job uses) to the
chosen tag so the CI workflow references a stable, reproducible release instead
of the mutable "feat/cache" branch.
In @.github/workflows/on-version-tagged.yaml:
- Line 16: The workflow uses an unstable branch reference
"unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@feat/cache"
which breaks reproducible releases; update that uses line to point to a stable
version tag (for example replace "@feat/cache" with "@v2.8.0" or a later semver
tag) so the publish workflow invocation is pinned to a specific released commit
instead of a branch.
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GitHub Actions best practices mutable branch references security stability
💡 Result:
Quick best-practices checklist for handling mutable branch references in GitHub Actions (security + stability):
- Pin third‑party actions to a full commit SHA (avoid branch/tag refs like v1 or main). (docs.github.com)
- Prefer immutable action distributions (GHCR / “immutable actions”) or package versions when available. (ghsioux.github.io)
- Enforce org/repo policy to require SHA‑pinning and block unpinned/mutable references. (docs.github.com)
- Use protected, stable branches (e.g., main) for workflow files and reuse workflows from the default branch so workflow execution uses trusted workflow code. (docs.github.com)
- Avoid trusting refs from untrusted actors (fork PRs, dependabot PRs); restrict secrets and write permissions for workflows triggered by external contributors. Use pull_request_target only when you understand the secret-exposure risk. (docs.github.com)
- Minimize permissions (principle of least privilege) for GITHUB_TOKEN and any tokens used in workflows. Rotate and scope credentials. (docs.github.com)
- Use branch filters and explicit refs in triggers/checkout to prevent accidental runs on the wrong branch (branches/branches-ignore, exact ref checks). (gist.github.com)
- Monitor and alert on action vulnerabilities via Dependabot/Advisory database; treat SHA‑pinned actions differently (Dependabot alerts vary by versioning). (docs.github.com)
- Audit workflow runs (logs, actors), rotate secrets after incidents, and review third‑party action source code before trusting mutable refs. (docs.github.com)
If you want, I can: audit a specific workflow for mutable refs and produce line-by-line fixes (send the workflow YAML).
Citations:
- 1: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
- 2: https://ghsioux.github.io/2024/12/10/securing-workflow-immutable-actions?utm_source=openai
- 3: https://docs.github.com/en/actions/how-tos/security-for-github-actions/security-guides/using-githubs-security-features-to-secure-your-use-of-github-actions?utm_source=openai
- 4: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
- 5: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
- 6: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
- 7: https://gist.github.com/bgoonz/9edc7a097cfde1fefc1d0a8e720e8178?utm_source=openai
- 8: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
- 9: https://docs.github.com/actions/security-guides/security-hardening-for-github-actions?utm_source=openai
Replace mutable branch reference with a version tag or commit SHA.
Line 49 references @feat/cache, a mutable branch that can change without notice. This creates stability and security risks in production workflows. GitHub best practices require pinning reusable workflows to immutable references—either a specific release tag or a full commit SHA—rather than branch names. The validate job (line 30) and other jobs in this workflow have the same issue.
🤖 Prompt for AI Agents
In @.github/workflows/on-pr.yaml at line 49, The workflow is pinning an external
reusable workflow to a mutable branch reference ("uses:
unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache");
replace that branch ref with an immutable tag or full commit SHA (for example
change "@feat/cache" to a release tag like "@v1.2.3" or a commit SHA) wherever
this pattern appears (including the validate job and other uses lines) so the
reusable workflow is pinned to a stable, auditable revision.
.github/workflows/on-pr.yaml
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| uses: unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache |
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Avoid using mutable branch references in production workflows.
The e2e job references @feat/cache instead of a version tag or commit SHA. This creates stability and security concerns—the branch can be force-pushed or modified without notice, pulling in unintended changes. Pin to a specific commit hash or release tag instead.
🤖 Prompt for AI Agents
In @.github/workflows/on-pr.yaml at line 52, The workflow is using a mutable
branch ref in the `uses:` line ("uses:
unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache"),
which risks pulling unreviewed changes; change that ref to a stable tag or
commit SHA (for example replace `@feat/cache` with a release tag like `@v1.2.3`
or a specific commit hash `@<commit-sha>`), and update the workflow to reference
that immutable identifier so the e2e job always runs the pinned version.
.github/workflows/on-push-main.yaml
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| uses: unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache |
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Replace mutable branch references with version tags for all reusable workflows.
The test, validate, and e2e jobs reference @feat/cache instead of version tags. In main branch workflows, all external workflow references should use immutable version tags to ensure reproducibility and prevent unintended changes from branch updates. The version-and-tag job correctly demonstrates this pattern by using @v1.20.2.
🤖 Prompt for AI Agents
In @.github/workflows/on-push-main.yaml at line 46, The workflow references an
external reusable workflow using a mutable branch ref
"unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache";
replace that mutable branch ref with an immutable version tag (e.g. match the
pattern used by the version-and-tag job such as "@v1.20.2") so the "uses:
unbounded-tech/workflows-crossplane/.github/workflows/test.yaml@feat/cache" line
(and any other "uses:" lines pointing to branches) uses a fixed tag instead of a
branch name to ensure reproducible runs.
.github/workflows/on-push-main.yaml
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| uses: unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache |
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Use a version tag instead of the mutable @feat/cache branch reference.
The e2e job (and the validate and test jobs) reference @feat/cache, which is a branch that can be force-pushed or deleted. Use an immutable version tag (like @v1.20.2) to ensure stable, reproducible workflows in the main branch.
🤖 Prompt for AI Agents
In @.github/workflows/on-push-main.yaml at line 49, Replace the mutable branch
reference
"unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache" with
an immutable version tag (for example "@v1.20.2"); update the "uses:
unbounded-tech/workflows-crossplane/.github/workflows/e2e.yaml@feat/cache" entry
and any other occurrences in the workflow (validate/test/e2e job uses) to the
chosen tag so the CI workflow references a stable, reproducible release instead
of the mutable "feat/cache" branch.
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| uses: unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@feat/cache |
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GitHub Actions best practices reusable workflows version pinning release reproducibility
💡 Result:
Summary — concise best practices for reusable workflows, version pinning, releases and reproducibility:
-
Pin to immutable refs (commit SHAs) for security and reproducibility. Prefer full commit SHA in uses: (repo@), with an inline comment noting the human-friendly tag/version. This is the most secure and immutable option. [1][2]
-
Use semantic/loose tags for controlled upgrades. Publish tag hierarchy (v1, v1.2, v1.2.3) and “slip” only minor/patch tags when you intentionally want callers to pick up backward-compatible fixes; keep major tags immutable. Combine this with a strict release process and changelog. [4]
-
Make reusable-workflow inputs explicit and versioned. Add an optional ref input or explicit version input where callers can override the ref; document defaults and compatibility guarantees in the workflow README. Test breaking changes by bumping major tags only. [4]
-
Release hygiene: create signed/immutable releases (tags) for public reusable workflows and actions, publish release notes and compatibility guarantees, and update callers by pinning to the released SHA or patch tag. If available, enable immutable releases / attestations. [3][4]
-
Enforce org/enterprise policies: require SHA pinning and restrict allowed actions/reusable workflows via the allowed-actions policy; use blocklists for known-bad versions. This lets admins prevent unpinned or malicious updates. [3][2]
-
Audit and avoid “unpinnable” actions: review action source code and dependencies; avoid actions that download or run unverified remote code (these can change behavior despite SHA pinning). Fork and vendor-critical actions into org-controlled repos when possible. [2][8]
-
Use Dependabot and CI tests for safe updates: run automated tests against new action/workflow versions in a sandbox branch/PR, then promote to a pinned SHA after verification; record the tested SHA in workflows. [2][5]
-
Documentation and observability: document supported inputs, outputs, and compatibility matrix in the workflow repo; include the tested SHA in callers as a comment; add automated tests and release notes so consumers can understand when to upgrade. [4][2]
Quick practical template examples:
- Secure pin (recommended): uses: actions/checkout@f43a0e5 # v3.6.0. [2]
- Loose/minor adoption: callers reference repo@v1.2 (slipped intentionally) while CI uses pinned SHAs for production runs. [4]
If you want, I can:
- produce a concrete tagging/release workflow (GitHub Actions YAML) that enforces SHAs, creates signed immutable releases and slips tags according to semver; or
- draft an example allowed-actions policy for an org enforcing SHA pinning.
Sources: GitHub security docs & guidance; Well‑Architected Actions security; GitHub changelog on SHA pinning & blocking; community best-practice guides on versioning/pinning. [1][2][3][4][5]
References
[1] GitHub Docs — Security hardening for GitHub Actions (pin to full-length commit SHA / reuse workflows).
[2] GitHub Well‑Architected — Securing GitHub Actions Workflows (pin versions, avoid unpinnable actions).
[3] GitHub Changelog — Allowed-actions policy updates: enforce SHA pinning & blocklist (2025 changelog).
[4] Versioning gist / community writeups — loose versioning, tag slipping & migration patterns.
[5] Community posts on pinning actions (practical pin-to-SHA examples).
Critical: Do not use branch references in release workflows.
This workflow triggers on version tags (v*.*.*) and must use stable, versioned dependencies to ensure reproducible releases. Using @feat/cache undermines release reproducibility—if the branch is updated, re-running the same tagged version will produce different behavior. This is especially problematic given that line 23 already uses @v2.1.1 for the release job, demonstrating awareness of versioning requirements.
Required: Replace @feat/cache with a stable version tag (e.g., @v2.8.0 or later) to maintain release integrity.
🤖 Prompt for AI Agents
In @.github/workflows/on-version-tagged.yaml at line 16, The workflow uses an
unstable branch reference
"unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@feat/cache"
which breaks reproducible releases; update that uses line to point to a stable
version tag (for example replace "@feat/cache" with "@v2.8.0" or a later semver
tag) so the publish workflow invocation is pinned to a specific released commit
instead of a branch.
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Actionable comments posted: 2
Caution
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⚠️ Outside diff range comments (1)
.github/workflows/on-pr.yaml (1)
52-59: Mutable branch reference should use a stable release tag, notfeat/cache.All workflow jobs reference the
feat/cachebranch, which is a mutable feature branch. This poses a supply chain risk: if thefeat/cachebranch in the external repository is compromised, it can be modified to alter the behavior of all jobs, including the e2e job that has AWS OIDC access.Replace with a specific release tag or commit SHA to ensure the workflow definition cannot change unexpectedly.
🤖 Fix all issues with AI agents
In @.github/workflows/on-pr.yaml:
- Around line 65-66: The PR workflow currently reuses the reusable workflow via
"uses:
unbounded-tech/workflows-crossplane/.github/workflows/publish.yaml@feat/cache"
together with "secrets: inherit", which risks secret exposure if that branch is
compromised; either pin the reusable workflow reference to an immutable commit
hash (replace @feat/cache with @<commit-sha>), or remove "secrets: inherit" if
the publish job (which creates tag "pr-${{ github.event.pull_request.number
}}-${{ github.sha }}") does not actually need secrets, or add an inline comment
documenting why a mutable branch plus inherited secrets is required for
testing—apply the chosen change where the "uses:" and "secrets: inherit" lines
appear.
- Line 30: The workflow currently references a mutable feature branch via the
step "uses:
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache";
decide whether this is temporary or permanent and fix accordingly: if temporary
for testing, add a clear comment in the PR/commit and keep the branch reference
only for the test duration; if permanent, pin the workflow to an immutable
identifier (a released tag like @vX.Y.Z or a specific commit SHA) by replacing
@feat/cache with the tag or SHA so CI is reproducible and stable. Ensure the PR
description documents the chosen approach and, if keeping the branch short-term,
create a follow-up task to update to a tag once upstream changes are released.
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Actionable comments posted: 1
🤖 Fix all issues with AI agents
In @.github/workflows/on-pr.yaml:
- Line 30: Replace the mutable branch reference in the workflow job "uses"
entries that currently point to
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache
(and the identical occurrences used by test, e2e, publish jobs) with the
immutable tag @v2.7.0 so the workflow uses
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@v2.7.0;
update all four occurrences to ensure reproducible, stable references.
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- .github/workflows/on-push-main.yaml
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)
- GitHub Check: test / test
- GitHub Check: e2e / test
🔇 Additional comments (1)
.github/workflows/on-pr.yaml (1)
52-59: No action needed - the e2e job is correctly configured.The e2e job correctly omits
secrets: inheritbecause it uses GitHub OIDC authentication (aws-use-oidc: true). OIDC doesn't require passing AWS credentials as secrets; instead, it exchanges the GitHub OIDC token for temporary AWS credentials using the role specified byaws-account-id. The workflow has proper permissions configured (id-token: write) to support this. This configuration is consistent across bothon-pr.yamlandon-push-main.yaml, and matches the recommended pattern where only jobs that need explicit secrets (likepublish) includesecrets: inherit.Likely an incorrect or invalid review comment.
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Actionable comments posted: 1
🧹 Nitpick comments (1)
.github/workflows/on-pr.yaml (1)
58-59: Consider documenting the rationale for the specific timeout values.The timeout values were increased from 30 to 33 minutes. While the increase makes sense if caching adds overhead, the specific value of 33 seems arbitrary. Consider using a round number (e.g., 35 or 40) or documenting why 33 minutes was chosen.
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🔇 Additional comments (1)
.github/workflows/on-pr.yaml (1)
51-60: LGTM! OIDC authentication is properly configured.The e2e job correctly uses OIDC authentication (
aws-use-oidc: true) with the requiredid-token: writepermission (line 22). This is a security best practice that eliminates the need for long-lived AWS credentials.
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| uses: unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache |
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Use immutable workflow references instead of a feature branch.
Referencing @feat/cache introduces instability because feature branches are mutable and can be force-pushed, deleted, or modified without notice. This breaks reproducibility and could cause unexpected workflow failures.
For testing purposes during development, this may be acceptable, but before merging to main, consider:
- Using the specific commit SHA:
@72f4b0fa9ec90be73d54458461b2f4670e11eafdfor immutability during this PR - Merging
feat/cacheinto a release branch and tagging it (e.g.,@v2.8.0) - Reverting to
@v2.7.0if the caching improvements can wait for the feature branch to stabilize
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Actionable comments posted: 1
🤖 Fix all issues with AI agents
In @.github/workflows/on-push-main.yaml:
- Line 27: Replace the temporary branch ref in the uses line (uses:
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache)
with a stable version tag (e.g., @v2.8.0) once the caching experiment completes,
and add a brief note in the PR or workflow header stating the planned revert
timeline and testing checklist; also reconcile the timeout inconsistency by
aligning on-push-main.yaml’s timeout to match on-pr.yaml (33 minutes) or vice
versa so both workflows use the same value.
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.github/workflows/on-push-main.yaml
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)
- GitHub Check: test / test
- GitHub Check: e2e / test
🔇 Additional comments (2)
.github/workflows/on-push-main.yaml (2)
55-56: Confirm timeout value differences are intentional.The
on-pr.yamlworkflow usestimeout-minutes: 33andcleanup-timeout-minutes: 33for the e2e job, while this file uses 30 for both. Clarify whether this difference is intentional based on expected execution times for push vs. PR workflows, or if both files should be aligned.
50-53: OIDC authentication setup is correct.The workflow properly configures OIDC authentication with
id-token: writepermission (line 18) andaws-use-oidc: true(line 52). This approach is more secure than static credentials and follows AWS best practices.Ensure the AWS account (
034489662075) has:
- An OIDC provider configured for
token.actions.githubusercontent.com- An IAM role with trust policy allowing the GitHub repository (
hops-ops/aws-network) to assume the role- Appropriate permissions for the E2E tests (AWS resources being deployed)
.github/workflows/on-push-main.yaml
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| validate: | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@v2.7.0 | ||
| uses: unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache |
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Branch references should be temporary for this caching experiment.
Using @feat/cache instead of version tags in production workflows reduces reproducibility and stability. While the commit message "chore: experiment" indicates this is temporary, confirm:
- Timeline for reverting to a stable version reference (e.g.,
@v2.8.0or later tag once testing is complete) - Plan to test the
feat/cachebranch thoroughly before reverting
Note: The timeout inconsistency should also be resolved—on-pr.yaml uses 33 minutes while on-push-main.yaml uses 30 minutes.
🤖 Prompt for AI Agents
In @.github/workflows/on-push-main.yaml at line 27, Replace the temporary branch
ref in the uses line (uses:
unbounded-tech/workflows-crossplane/.github/workflows/validate.yaml@feat/cache)
with a stable version tag (e.g., @v2.8.0) once the caching experiment completes,
and add a brief note in the PR or workflow header stating the planned revert
timeline and testing checklist; also reconcile the timeout inconsistency by
aligning on-push-main.yaml’s timeout to match on-pr.yaml (33 minutes) or vice
versa so both workflows use the same value.
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