$ git clone -n https://src.fedoraproject.org/rpms/ocaml-num.git /var/lib/mock/f40-build-2097219-50428/root/chroot_tmpdir/scmroot/ocaml-num
Cloning into '/var/lib/mock/f40-build-2097219-50428/root/chroot_tmpdir/scmroot/ocaml-num'...
$ git fetch origin 0bffe7979bffc70ba372b56c5988db23a66f497b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-num
 * [new ref]         0bffe7979bffc70ba372b56c5988db23a66f497b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0bffe79 Bump release and rebuild