$ git clone -n https://gitee.com/src-opencloudos-rpms/tmux /var/lib/mock/dist-oc8-build-58140-15943/root/chroot_tmpdir/scmroot/tmux
Cloning into '/var/lib/mock/dist-oc8-build-58140-15943/root/chroot_tmpdir/scmroot/tmux'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tmux
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 529b3be import tmux-2.7-3.tl3