$ git clone -n https://gitee.com/wenyuzifang/libburn.git /var/lib/mock/dist-an23-build-485418-74348/root/chroot_tmpdir/scmroot/libburn
Cloning into '/var/lib/mock/dist-an23-build-485418-74348/root/chroot_tmpdir/scmroot/libburn'...
$ git fetch origin 1200f99dbd4f22d83def1a84e4cf7279dd7de7d8:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libburn
 * [new ref]         1200f99dbd4f22d83def1a84e4cf7279dd7de7d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1200f99 Update code from upstream