$ git clone -n https://gitee.com/src-opencloudos-rpms/osbuild /var/lib/mock/dist-oc9-build-57303-15524/root/chroot_tmpdir/scmroot/osbuild
Cloning into '/var/lib/mock/dist-oc9-build-57303-15524/root/chroot_tmpdir/scmroot/osbuild'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/osbuild
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f0624c !2 add support for oc9 Merge pull request !2 from Fanjun Kong/oc9