$ git remote add upstream https://github.com/TarsCloud/TarsGo.git
add upstream, use git remote -v
to verify
$ git fetch upstream
git merge upstream/master master
git push
$ git remote add upstream https://github.com/TarsCloud/TarsGo.git
add upstream, use git remote -v
to verify
$ git fetch upstream
git merge upstream/master master
git push