$ git clone -n https://src.fedoraproject.org/rpms/bovo.git /var/lib/mock/f42-build-871493-177655/root/chroot_tmpdir/scmroot/bovo
Cloning into '/var/lib/mock/f42-build-871493-177655/root/chroot_tmpdir/scmroot/bovo'...
$ git fetch origin 15746225cae036211a3ee592c1b09b80b0278bf9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bovo
 * [new ref]         15746225cae036211a3ee592c1b09b80b0278bf9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1574622 24.12.2