$ git clone -n https://gitee.com/wenyuzifang/radvd.git /var/lib/mock/dist-an23-build-486656-74383/root/chroot_tmpdir/scmroot/radvd
Cloning into '/var/lib/mock/dist-an23-build-486656-74383/root/chroot_tmpdir/scmroot/radvd'...
$ git fetch origin f6e86524fba29edf35b31a564fa608818d404f78:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/radvd
 * [new ref]         f6e86524fba29edf35b31a564fa608818d404f78 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6e8652 Update code from upstream