Have you ever needed to generate a patch file from a GitHub pull request? If you answered YES, you'll enjoy this little hidden feature.
Every pull-request on GH can be downloaded as a beautiful mail-patch, just by appending ".patch" to the pr URL.
E.g., from: https://github.com/php/php-src/pull/296
This will generate a mail-formatted patch file, that is a little different from an usual patch file: It has e-mail metadata.
After downloaded, apply the result patch using: $ git am 296.patch