$ git clone -n https://gitee.com/wency_cn/mpich_1764787093.git /var/lib/mock/dist-an23-build-491065-74530/root/chroot_tmpdir/scmroot/mpich_1764787093
Cloning into '/var/lib/mock/dist-an23-build-491065-74530/root/chroot_tmpdir/scmroot/mpich_1764787093'...
$ git fetch origin a2652a0f8a53aa4cd10cd9fef340c15d0c192497:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/mpich_1764787093
 * [new ref]         a2652a0f8a53aa4cd10cd9fef340c15d0c192497 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2652a0 Update code from upstream