$ git clone -n https://gitee.com/mgb01105731/tmux.git /var/lib/mock/dist-an23-build-540174-84526/root/chroot_tmpdir/scmroot/tmux
Cloning into '/var/lib/mock/dist-an23-build-540174-84526/root/chroot_tmpdir/scmroot/tmux'...
$ git fetch origin c2483d35d321e95c9d9a9671fa71ab62d3f31db3:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/tmux
 * [new ref]         c2483d35d321e95c9d9a9671fa71ab62d3f31db3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2483d3 Update to 3.6b