$ git clone -n https://gitee.com/src-opencloudos-rpms/ocaml.git /var/lib/mock/dist-oc9-build-123105-72767/root/chroot_tmpdir/scmroot/ocaml
Cloning into '/var/lib/mock/dist-oc9-build-123105-72767/root/chroot_tmpdir/scmroot/ocaml'...
$ git fetch origin 6de2ef2f65d4320dc816602156a9e3d843e88e41:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ocaml
 * [new ref]         6de2ef2f65d4320dc816602156a9e3d843e88e41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6de2ef2 import ocaml-5.2.0-6.tl4