aur.archlinux.org stopped advertising the HEAD symref around 2026-04-22
(`git ls-remote --symref` returns HEAD as a raw SHA, no 'ref:' line).
Fresh clones therefore land in detached HEAD, commits do not land on
any branch, and 'git push origin master' fails with:
error: src refspec master does not match any
Every AUR publish run since has failed for this reason. Checking out
master explicitly after clone attaches the working copy to the branch
the push targets. refs/heads/master is still present on the remote, so
no other changes are needed.
d090e049ec