$ git clone -n https://gitee.com/src-opencloudos-rpms/gnome-backgrounds.git /var/lib/mock/dist-oc9-build-46230-14592/root/chroot_tmpdir/scmroot/gnome-backgrounds
Cloning into '/var/lib/mock/dist-oc9-build-46230-14592/root/chroot_tmpdir/scmroot/gnome-backgrounds'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gnome-backgrounds
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 683ad30 import gnome-backgrounds-43-3.tl4