$ git clone -n https://gitee.com/wenyuzifang/radvd.git /var/lib/mock/dist-an23-build-481697-74252/root/chroot_tmpdir/scmroot/radvd
Cloning into '/var/lib/mock/dist-an23-build-481697-74252/root/chroot_tmpdir/scmroot/radvd'...
$ git fetch origin 63d832ed456033340c9ef5b8260474d9db7ed4d8:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/radvd
 * [new ref]         63d832ed456033340c9ef5b8260474d9db7ed4d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63d832e Update code from upstream