Two commits were made in the GitHub web editor to test whether the self-hosted
runner group was shared with this repository - it is. They branched from
e60945e, while the publication export produced its own two commits from the same
parent, so main here and main on GitHub had diverged and the ff-only push was
correctly refused.
Merging rather than force-pushing: the commits are real history somebody made,
and the wilm branch has already merged them, so discarding them from main would
only delay their return.