$ git clone -n https://src.fedoraproject.org/rpms/kf6-karchive.git /var/lib/mock/f40-build-2315829-57970/root/chroot_tmpdir/scmroot/kf6-karchive
Cloning into '/var/lib/mock/f40-build-2315829-57970/root/chroot_tmpdir/scmroot/kf6-karchive'...
$ git fetch origin a99c6fbdf808a29cb9a3014007b5a0da0467c275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-karchive
 * [new ref]         a99c6fbdf808a29cb9a3014007b5a0da0467c275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a99c6fb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild