Download Github pull request as unified diff

Question

How can I download the changes contained in a Github pull request as a unified diff?

Answer 1

To view a commit as a diff/patch file, just add .diff or .patch to the end of the URL, for example:

• https://github.com/weppos/whois/pull/90
• https://github.com/weppos/whois/pull/90.diff
• https://github.com/weppos/whois/pull/90.patch

Answer 2

To get the PR changes into your local repo in an staged but uncommitted state, so you can review:

git pull origin pull/123/head --no-commit

And to generate a patch file from that:

git diff --cached > pr123.diff    

Answer 3

Somewhat related, to let git download pull request 123 and patch it into mylocalbranch locally, run:

git checkout -b mylocalbranch
git pull origin pull/921/head