$ git clone -n https://src.fedoraproject.org/rpms/ocaml-omd.git /var/lib/mock/f45-build-20628-572/root/chroot_tmpdir/scmroot/ocaml-omd
Cloning into '/var/lib/mock/f45-build-20628-572/root/chroot_tmpdir/scmroot/ocaml-omd'...
$ git fetch origin 5bb45faac72e9f3e95eea77b31d0ad26330270a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-omd
 * [new ref]         5bb45faac72e9f3e95eea77b31d0ad26330270a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bb45fa OCaml 5.5.1 rebuild