How to merge/fetch issues/pull requests from upstream to my fork

How to merge/fetch issues/pull requests from upstream to my fork ?

I want to apply开发者_StackOverflow PullRequest, but I'm not sure how can I fork the Pull-request from upstream ?

Or I need add requester repository ?

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Check out this article. The basic premise is to add a remote (git remote add upstream https://github.com/otheruser/repo.git) for the upstream repo. This gives you easy access to any commits (PRs, etc) from that repo