$ git clone -n https://gitee.com/wenyuzifang/tmux.git /var/lib/mock/dist-an23-build-466667-73981/root/chroot_tmpdir/scmroot/tmux
Cloning into '/var/lib/mock/dist-an23-build-466667-73981/root/chroot_tmpdir/scmroot/tmux'...
$ git fetch origin d213bff9312585476646cf2dcbec60fda24439d3:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tmux
 * [new ref]         d213bff9312585476646cf2dcbec60fda24439d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d213bff Update code from upstream