We should have a function which allows callers to collect a diff from a remote GitHub repository. This function should comply with the interface used by a local Git repository to do the same.
<rdar://problem/118993239>
Pull request: https://github.com/WebKit/WebKit/pull/21116
Committed 271687@main (912bf757dabd): <https://commits.webkit.org/271687@main> Reviewed commits have been landed. Closing PR #21116 and removing active labels.