The mirror carries tags to GitHub but not releases, so the replica's Releases page -- and anyone watching the repository there -- stopped at the last release made on GitHub. After the tag build has published, a new github-release job copies the tag's Gitea release to a GitHub release: the same notes, with PR and issue numbers rewritten to Gitea links, the same files, and a line pointing back to the Gitea release. It uses the run's own token and is left out of the status reported to Gitea, so it cannot fail a release. With no Gitea release for the tag it does nothing.