$ git clone -n https://gitee.com/src-opencloudos-rpms/mm-common.git /var/lib/mock/dist-oc9-build-47273-14592/root/chroot_tmpdir/scmroot/mm-common
Cloning into '/var/lib/mock/dist-oc9-build-47273-14592/root/chroot_tmpdir/scmroot/mm-common'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mm-common
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d52e12b import mm-common-1.0.4-1.oc9