$ git clone -n https://gitee.com/src-opencloudos-rpms/libvncserver.git /var/lib/mock/dist-oc9-build-42692-14591/root/chroot_tmpdir/scmroot/libvncserver
Cloning into '/var/lib/mock/dist-oc9-build-42692-14591/root/chroot_tmpdir/scmroot/libvncserver'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libvncserver
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f21b55c import libvncserver-0.9.13-3.tl4