$ git clone -n https://gitee.com/lizhao2025/mpich.git /var/lib/mock/dist-an23-build-500362-74764/root/chroot_tmpdir/scmroot/mpich
Cloning into '/var/lib/mock/dist-an23-build-500362-74764/root/chroot_tmpdir/scmroot/mpich'...
$ git fetch origin b2df396764e9c3e9a17c4a2e5a48aeb944c74576:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/mpich
 * [new ref]         b2df396764e9c3e9a17c4a2e5a48aeb944c74576 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2df396 Update code from upstream