fix(ci): do not persist the job token in .git/config in the public-repo guard

[yakimoto]

Why

actions/checkout without persist-credentials: false writes the job's GITHUB_TOKEN into
.git/config, where any later step — or anything those steps execute — can read it. This is the
security gate that DOWNLOADS AND EXECUTES the gitleaks binary, and the workflow's own comment
already reasons about tampered downloads ("so a tampered or MITM'd download can never execute
inside the security gate"), so the threat model is written down and only the credential half of
the mitigation is missing. Found by zizmor as warning[artipacked]: credential persistence through GitHub Actions artifacts.

Safety

Verified this job only: checks out, installs gitleaks (pinned + checksum), runs
gitleaks detect --no-git, installs ripgrep, runs content-policy.sh. permissions: contents: read. Nothing pushes, calls gh, or reads GITHUB_TOKEN/GH_TOKEN, so the token was never needed
in .git/config in the first place.

Refs wave-av/claude-workstation#1870.

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Note

Low Risk
Low-risk CI hardening that removes unnecessary credential persistence; scan steps and contents: read permissions are unchanged.

Overview
Hardens the public-repo-guard workflow by setting persist-credentials: false on actions/checkout, so the job’s GITHUB_TOKEN is not stored in .git/config.

That aligns with the gate’s threat model: later steps install and run a pinned gitleaks binary and content-policy scripts, so nothing in the job needs a persisted credential in the repo tree.

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[macroscopeapp]

Approvability

Verdict: Approved e689185

Minor CI security hardening that adds persist-credentials: false to the checkout action, preventing token persistence in git config. The change is made by the file's designated code owner and follows established security best practices.

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[qodo-code-review]

PR Summary by Qodo

Fix public-repo-guard checkout to avoid persisting GITHUB_TOKEN in .git/config

🐞 Bug fix ⚙️ Configuration changes 🕐 10-20 Minutes

AI Description

• Disable credential persistence during checkout in the public-repo guard workflow.
• Prevent later steps from reading GITHUB_TOKEN via .git/config in this security gate.
• Reduce exposure risk when downloading and executing pinned, checksum-verified binaries.

Diagram

graph TD
  A["public-repo-guard job"] --> B["actions/checkout@v5"] --> D["Install/verify gitleaks"] --> E["gitleaks detect --no-git"] --> F["Run content-policy.sh"]
  B -. "before: wrote token" .-> C[(".git/config")]
  B -. "now: persist-credentials=false" .-> C

Loading

High-Level Assessment

Using actions/checkout with persist-credentials: false is the simplest, standard mitigation to prevent GITHUB_TOKEN from being written to .git/config. Alternatives like removing checkout entirely or using a blank token would either break the job’s need for repo contents or be less explicit/idiomatic than the dedicated flag.

Files changed (1) +2 / -0

Other (1) +2 / -0

public-repo-guard.ymlDisable credential persistence in checkout step +2/-0

Disable credential persistence in checkout step

• Adds 'persist-credentials: false' to the workflow’s 'actions/checkout' step. This prevents the job’s GITHUB_TOKEN from being stored in '.git/config', reducing exposure to subsequent steps and executed binaries.

.github/workflows/public-repo-guard.yml

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📥 Commits

Reviewing files that changed from the base of the PR and between a8a7fd4 and e689185.

📒 Files selected for processing (1)

• .github/workflows/public-repo-guard.yml

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[qodo-code-review]

Code Review by Qodo

🐞 Bugs (0) 📘 Rule violations (0) 📎 Requirement gaps (0)

Great, no issues found!

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[qodo-code-review]

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[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

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• No files require special attention.

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[yakimoto]

This PR is redundant with #74 (chore/guard-canonical-sync), which is already open and already contains this exact change.

Evidence — #74's diff to .github/workflows/public-repo-guard.yml includes:

+          # tree. Nothing here pushes -- the scan is `--no-git` over the working tree --
+          # so no step needs authenticated Git; drop it. (zizmor: artipacked)
+          persist-credentials: false

#74 is also broader than this PR: it syncs the whole vendored public-repo-guard trio to
the canonical source (wave-foundation/scaffolder/public-repo-guard) byte-for-byte, verified by
git blob SHA, rather than adding this one line in isolation.

Closing as redundant. This duplicate exists because the fan-out that opened this PR
(refs claude-workstation#1870) did not check for in-flight PRs touching the same file before
going out — #74 was already open. Merge #74 instead.