$ git clone -n https://gitee.com/mgb01105731/tmux.git /var/lib/mock/dist-an23-build-540221-84628/root/chroot_tmpdir/scmroot/tmux
Cloning into '/var/lib/mock/dist-an23-build-540221-84628/root/chroot_tmpdir/scmroot/tmux'...
$ git fetch origin 6c0ad38fab604f40a6a240436802a89f4443d65a:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/tmux
 * [new ref]         6c0ad38fab604f40a6a240436802a89f4443d65a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c0ad38 Update to 3.6b