$ git clone -n https://src.fedoraproject.org/rpms/poxml.git /var/lib/mock/f39-build-2058790-49151/root/chroot_tmpdir/scmroot/poxml
Cloning into '/var/lib/mock/f39-build-2058790-49151/root/chroot_tmpdir/scmroot/poxml'...
$ git fetch origin 9cf08e259cff63fbfc9ce7702e31c31a20f8121a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/poxml
 * [new ref]         9cf08e259cff63fbfc9ce7702e31c31a20f8121a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9cf08e2 23.08.4