I don’t do github pull requests.
github throws away all the relevant information, like having even a valid email address for the person asking me to pull. The diffstat is also deficient and useless. Git comes with a nice pull-request generation module, but github instead decided to replace it with their own totally inferior version. As a result, I consider github useless for these kinds of things. It’s fine for *hosting*, but the pull requests and the online commit editing, are just pure garbage.