How to put a patch (Pull requests) on your fork?

Question

git

Hello.
And so we have the usermain/project project on GitHub.
Made an organization (user/project) and a fork (usermain/project).
I deployed it on the local machine, made a dev-local branch.
In the usermain/project project appeared from the user Nick appeared Pull requests
I liked it, and I want to drag myself to the dev-local branch
git cherry-pick [url]
git am [url]
did not work, as I understand it, some other manipulations are needed

Answer 1

I do this: git remote add nick <nick-url> and take what I need from this "origin".
Pull requests are also on some special brunches, of course, but I don’t remember. There was an explanation on github.
upd: https://help.github.com/articles/checking-out-pull...