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The Wayback Machine - https://web.archive.org/web/20220630154258/https://docs.github.com/en/authentication/troubleshooting-commit-signature-verification
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Troubleshooting commit signature verification
You may need to troubleshoot unexpected issues that arise when signing commits locally for verification on GitHub.
Checking your commit and tag signature verification status
Updating an expired GPG key
Using a verified email address in your GPG key
