First, you want to make sure that your upstream is setup. Here origin
is your fork and upstream
is the forked repo.
$ git remote -v
origin https://github.com/YakDriver/watchmaker.git (fetch)
origin https://github.com/YakDriver/watchmaker.git (push)
upstream https://github.com/plus3it/watchmaker.git (fetch)
upstream https://github.com/plus3it/watchmaker.git (push)