$ git clone -n https://github.com/xcp-ng-rpms/ocaml /var/lib/mock/v9.0-incoming-11318-29647/root/chroot_tmpdir/scmroot/ocaml
Cloning into '/var/lib/mock/v9.0-incoming-11318-29647/root/chroot_tmpdir/scmroot/ocaml'...
$ git fetch origin bfd292aa1c5635238eb56306f7aeae0cf9dd6d28:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/ocaml
 * [new ref]         bfd292aa1c5635238eb56306f7aeae0cf9dd6d28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfd292a Merge pull request #1 from xcp-ng-rpms/ydi/9