$ git clone -n https://gitee.com/src-opencloudos-rpms/mpich.git /var/lib/mock/dist-oc9-build-70840-47477/root/chroot_tmpdir/scmroot/mpich
Cloning into '/var/lib/mock/dist-oc9-build-70840-47477/root/chroot_tmpdir/scmroot/mpich'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mpich
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 843e553 import mpich-4.1.1-3.tl4