$ git clone -n https://gitee.com/src-opencloudos-rpms/vmaf.git /var/lib/mock/dist-oc9-epol-build-54395-14768/root/chroot_tmpdir/scmroot/vmaf
Cloning into '/var/lib/mock/dist-oc9-epol-build-54395-14768/root/chroot_tmpdir/scmroot/vmaf'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vmaf
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b52b8df import vmaf-2.3.0-3.tl4