$ git clone -n https://gitee.com/src-opencloudos-rpms/ocaml /var/lib/mock/dist-oc9-la64-build-125827-75419/root/chroot_tmpdir/scmroot/ocaml
Cloning into '/var/lib/mock/dist-oc9-la64-build-125827-75419/root/chroot_tmpdir/scmroot/ocaml'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ocaml
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6de2ef2 import ocaml-5.2.0-6.tl4