We're going to set up a static.fedoraproject.org server for static assets relatively soon and can fix this as part of this. If someone wants it fixed urgently, happy to merge a PR that pulls the font assets into this repo for now.

Please do note that getfedora.org send an HTTP header referrer-policy: same-origin. This means that Google does not get information from which website the request for fonts comes.
So while the objects are requested from Google (though as @codeblock points out we intend to change that bit), they do not know that you visited getfedora.org, just that you want these particular fonts.