$ git clone -n https://src.fedoraproject.org/rpms/f28-backgrounds.git /var/lib/mock/f41-build-1683031-24255/root/chroot_tmpdir/scmroot/f28-backgrounds
Cloning into '/var/lib/mock/f41-build-1683031-24255/root/chroot_tmpdir/scmroot/f28-backgrounds'...
$ git fetch origin 1344de3ccbb3e89fe45d4de6a9fbfac5a66b75d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/f28-backgrounds
 * [new ref]         1344de3ccbb3e89fe45d4de6a9fbfac5a66b75d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1344de3 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild