$ git clone -n https://gitee.com/newstart-gdlc/nde-backgrounds.git /var/lib/mock/dist-an8.9-nde-build-520028-75391/root/chroot_tmpdir/scmroot/nde-backgrounds
Cloning into '/var/lib/mock/dist-an8.9-nde-build-520028-75391/root/chroot_tmpdir/scmroot/nde-backgrounds'...
$ git fetch origin c780fbeacc537cd019fbea8aa4752dc3cd7f226a:KOJI_FETCH_HEAD
From https://gitee.com/newstart-gdlc/nde-backgrounds
 * [new ref]         c780fbeacc537cd019fbea8aa4752dc3cd7f226a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c780fbe 替换壁纸