$ git clone -n https://src.fedoraproject.org/rpms/metis.git /var/lib/mock/f40-build-763346-122473/root/chroot_tmpdir/scmroot/metis
Cloning into '/var/lib/mock/f40-build-763346-122473/root/chroot_tmpdir/scmroot/metis'...
$ git fetch origin b39e1cbe3897471a4661dc9acf19a0c9ec607920:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/metis
 * [new ref]         b39e1cbe3897471a4661dc9acf19a0c9ec607920 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b39e1cb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild