how to sync forked repo on github

after fork a project on github, you may also need to sync your repo with the original repo you forked from, how to do that?

1. add upstream

   git remote add upstream git@github.intuit.com:xwei/iusclient.git

   if you found you add the wrong upstream, you can remove it

   git remote rm upstream

   then add the right upstream

   git remote add upstream git@github.intuit.com:xsbgoii/iusclient.git

2. then fetch upstream

   git fetch upstream

3. merge the upstream with your forked repo

   git merge upstream/develop

   notice I forked the develop branch