Commits made on GitHub web interface are unverified on GitLab side

I was commited some changes from GitHub side, using the Pins team’s account holder and GitHub web interface. When I force-pull from GitLab’s settings (on Repository Mirroring under Repository Settings page), I found some commits were unverified by GitLab.

The problem is when I am attempting to add the public key available from this endpoint to the GitLab account side, it fired an error that says someone used it. What should I do to resolve this issue?

Expection vs. Reality

Commit History


Adding PGP Key