How do I download the diff for a package?

There is a well-formed URL that can be used to download the diff for a specific package, if a diff has been generated:

{{ url.join(URL('../api/' + SUITE + '/pkg/PACKAGE/diff')) }}

E.g. for gunicorn, the URL would be {{ url.join(URL('../api/' + SUITE + '/pkg/gunicorn/diff')) }}.