$ git clone -n https://gitee.com/src-opencloudos-rpms/ceph /var/lib/mock/dist-oc9-epol-build-57296-15526/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-oc9-epol-build-57296-15526/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ceph
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffeb15c Rebuild