$ git clone -n https://gitee.com/opencloudos-stream/nvidia-555.git /var/lib/mock/dist-oc9-epol-build-229097-81279/root/chroot_tmpdir/scmroot/nvidia-555
Cloning into '/var/lib/mock/dist-oc9-epol-build-229097-81279/root/chroot_tmpdir/scmroot/nvidia-555'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/nvidia-555
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c54994a !1 update nvidia-555 Merge pull request !1 from yugozhang/master