wiki-replica cannot push to wiki

about nine hours ago (or more?) the wiki replica started failing to copy its changes to the main TPA wiki. In the mirror settings, the error is:

13:push to mirror: git push: exit status 128, stderr: "remote: HTTP Basic: Access denied\nfatal: Authentication failed for 'https://gitlab.torproject.org/tpo/tpa/team.wiki.git/'\n".

I suspect this might have something to do with the latest upgrade, because this had worked fine before.