$ git clone -n https://gitee.com/wency_cn/mdadm.git /var/lib/mock/dist-an23-build-503668-74854/root/chroot_tmpdir/scmroot/mdadm
Cloning into '/var/lib/mock/dist-an23-build-503668-74854/root/chroot_tmpdir/scmroot/mdadm'...
$ git fetch origin 749d58359b7cb2b46f54336d678a4568a608c4a1:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/mdadm
 * [new ref]         749d58359b7cb2b46f54336d678a4568a608c4a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 749d583 Update code from upstream