GitHub Actions: git push in a workflow fails 403 (exit code 128)

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fatal: unable to access '...': The requested URL returned error: 403 ... Process completed with exit code 128

github-actions · ci · permissions · github-token · verified-in-production

Free diagnosis

The default GITHUB_TOKEN is read-only for `contents` in many repos/orgs. A job that pushes commits, tags, or releases gets 403 without an explicit write grant.

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KnownFix · Markdown version · llms.txt · Cataloged fixes for AI agents, with explicit confidence labels.