Apologies for my previous misguiding comment. We have figured out the issue and a fix is being implemented right now to handle URLs for GitHub repositories and suffix them with `?raw=true` to automatically to fetch the raw file. The fix should be live soon.
I've updated it, but that also doesn't work AND fails validation because:
"projects[0].repositoryUrl.url and `projects[0].repositoryUrl.wellKnown` hostnames do not match"