$ git clone -n https://gitee.com/hongwei-qin/mpich.git /var/lib/mock/dist-an23.3-build-416506-72865/root/chroot_tmpdir/scmroot/mpich
Cloning into '/var/lib/mock/dist-an23.3-build-416506-72865/root/chroot_tmpdir/scmroot/mpich'...
$ git fetch origin b878bc2de6ab19cd4da1396045e92cefef91d8fe:KOJI_FETCH_HEAD
From https://gitee.com/hongwei-qin/mpich
 * [new ref]         b878bc2de6ab19cd4da1396045e92cefef91d8fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b878bc2 update to 4.1.2