$ git clone -n https://src.fedoraproject.org/rpms/arts.git /var/lib/mock/f42-build-3341110-44985/root/chroot_tmpdir/scmroot/arts
Cloning into '/var/lib/mock/f42-build-3341110-44985/root/chroot_tmpdir/scmroot/arts'...
$ git fetch origin 16b84c5a4458ff500162885f4da4467141c5faa0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arts
 * [new ref]         16b84c5a4458ff500162885f4da4467141c5faa0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16b84c5 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild