$ git clone -n https://gitee.com/lizhao2025/mpich.git /var/lib/mock/dist-an23-build-496795-74608/root/chroot_tmpdir/scmroot/mpich
Cloning into '/var/lib/mock/dist-an23-build-496795-74608/root/chroot_tmpdir/scmroot/mpich'...
$ git fetch origin 80c747c15e2fb32cb40fa8ed34a351d447514f00:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/mpich
 * [new ref]         80c747c15e2fb32cb40fa8ed34a351d447514f00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80c747c Update code from upstream