$ git clone -n https://src.fedoraproject.org/rpms/ocaml-topkg.git /var/lib/mock/f41-build-810970-147015/root/chroot_tmpdir/scmroot/ocaml-topkg
Cloning into '/var/lib/mock/f41-build-810970-147015/root/chroot_tmpdir/scmroot/ocaml-topkg'...
$ git fetch origin 858673a04cf78488be4bb461e5471921a69c7133:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-topkg
 * [new ref]         858673a04cf78488be4bb461e5471921a69c7133 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 858673a OCaml 5.2.0 for Fedora 41