$ git clone -n https://gitee.com/src-opencloudos-rpms/opencloudos-stream-getsource /var/lib/mock/dist-oc9-build-64445-16657/root/chroot_tmpdir/scmroot/opencloudos-stream-getsource
Cloning into '/var/lib/mock/dist-oc9-build-64445-16657/root/chroot_tmpdir/scmroot/opencloudos-stream-getsource'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/opencloudos-stream-getsource
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2932a3f init for oc9 get_source for epol