$ git clone -n https://src.fedoraproject.org/rpms/ahven.git /var/lib/mock/f39-build-2566212-62096/root/chroot_tmpdir/scmroot/ahven
Cloning into '/var/lib/mock/f39-build-2566212-62096/root/chroot_tmpdir/scmroot/ahven'...
$ git fetch origin 215f7e09510207f31d1195ca7589e25d9d3e8ec6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ahven
 * [new ref]         215f7e09510207f31d1195ca7589e25d9d3e8ec6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 215f7e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild