$ git clone -n https://gitee.com/src-opencloudos-rpms/rubygem-ronn-ng.git /var/lib/mock/dist-oc9-build-60187-16463/root/chroot_tmpdir/scmroot/rubygem-ronn-ng
Cloning into '/var/lib/mock/dist-oc9-build-60187-16463/root/chroot_tmpdir/scmroot/rubygem-ronn-ng'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rubygem-ronn-ng
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72bb16a import rubygem-ronn-ng-0.9.1-4.tl4