$ git clone -n https://gitee.com/wency_cn/mdadm_1770756880.git /var/lib/mock/dist-an23-build-513296-75099/root/chroot_tmpdir/scmroot/mdadm_1770756880
Cloning into '/var/lib/mock/dist-an23-build-513296-75099/root/chroot_tmpdir/scmroot/mdadm_1770756880'...
$ git fetch origin b1238606f7ec6e1c4106244a19eabec64c51f18c:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/mdadm_1770756880
 * [new ref]         b1238606f7ec6e1c4106244a19eabec64c51f18c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b123860 Update code from upstream