$ git clone -n https://gitee.com/src-opencloudos-rpms/openmpi.git /var/lib/mock/dist-oc9-build-47431-14592/root/chroot_tmpdir/scmroot/openmpi
Cloning into '/var/lib/mock/dist-oc9-build-47431-14592/root/chroot_tmpdir/scmroot/openmpi'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openmpi
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34b1311 import openmpi-4.1.2-3.tl4