$ git clone -n https://gitee.com/src-opencloudos-rpms/po4a.git /var/lib/mock/dist-oc9-build-62413-16463/root/chroot_tmpdir/scmroot/po4a
Cloning into '/var/lib/mock/dist-oc9-build-62413-16463/root/chroot_tmpdir/scmroot/po4a'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/po4a
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43d7267 import po4a-0.66-4.tl4