First you need to add a remote branch to your repository that points to the original repo you forked from.

git remote add --track master mleung git://github.com/mleung/feather.git

You will want to replace ‘master’ with the branch you want to track in the remote repo. In most cases this will be master, although you could replace it with edge or any other branch. You should also replace ‘mleung’ is what you the remote will be called.

To verify the remote repository was added run

git remote

You should see the new remote repo, in this case named ‘mleung’, along with any other remote repositories you may have previously added.

Now we can fetch all the changes from mleung’s code base.

git fetch mleung

This will create a new remote branch called ‘mleung/master’. Now we are ready to merge the code from the remote repository.

git merge mleung/master

That’s it. Remember, this process isn’t limited only to the original repository. Feel free to add remote branches for other user’s forks or even from repositories outside Github.