$ git clone -n https://gitee.com/src-opencloudos-rpms/mdadm.git /var/lib/mock/dist-oc9-build-42995-14591/root/chroot_tmpdir/scmroot/mdadm
Cloning into '/var/lib/mock/dist-oc9-build-42995-14591/root/chroot_tmpdir/scmroot/mdadm'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mdadm
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6de712a import mdadm-4.2-4.tl4