$ git clone -n https://gitee.com/wenyuzifang/tmux.git /var/lib/mock/dist-an23-build-466285-73955/root/chroot_tmpdir/scmroot/tmux
Cloning into '/var/lib/mock/dist-an23-build-466285-73955/root/chroot_tmpdir/scmroot/tmux'...
$ git fetch origin 1161e4d34ae22e37df3776ad3452be375288c31c:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tmux
 * [new ref]         1161e4d34ae22e37df3776ad3452be375288c31c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1161e4d Update code from upstream