$ git clone -n https://gitee.com/src-opencloudos-rpms/mdadm.git /var/lib/mock/dist-oc8-build-253269-84272/root/chroot_tmpdir/scmroot/mdadm
Cloning into '/var/lib/mock/dist-oc8-build-253269-84272/root/chroot_tmpdir/scmroot/mdadm'...
$ git fetch origin 6471a9e021098ffc5f8eebb515b30ddc5a0c831d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mdadm
 * [new ref]         6471a9e021098ffc5f8eebb515b30ddc5a0c831d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6471a9e import mdadm-4.2-20.tl3