$ git clone -n https://src.fedoraproject.org/rpms/f37-backgrounds.git /var/lib/mock/f41-build-side-1-2635119-26094/root/chroot_tmpdir/scmroot/f37-backgrounds
Cloning into '/var/lib/mock/f41-build-side-1-2635119-26094/root/chroot_tmpdir/scmroot/f37-backgrounds'...
$ git fetch origin 839d4c7d93611304b5359615d0a1a85a16b1c49c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/f37-backgrounds
 * [new ref]         839d4c7d93611304b5359615d0a1a85a16b1c49c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 839d4c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild