$ git clone -n https://gitee.com/opencloudos-stream/ocaml-zarith.git /var/lib/mock/dist-oc9-epol-build-119924-70865/root/chroot_tmpdir/scmroot/ocaml-zarith
Cloning into '/var/lib/mock/dist-oc9-epol-build-119924-70865/root/chroot_tmpdir/scmroot/ocaml-zarith'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ocaml-zarith
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3941382 !1 [IA69C7]:Rebuild for ocaml in opencloudos-stream Merge pull request !1 from ocs-bot/master