Describe the feature

Hi there,

Thanks for UNGH, I'm looking into leveraging this for a tool I've built, wanted to request with the ‎/repos/{owner}/{name} endpoint, could we include an ‎isFork field? The underlying GitHub API already exposes this as ‎fork, so mapping it to pass through seems straightforward. And it will be very useful for my usecase.

Happy to open a PR for this if you’re open to the change. Let me know any preferences on naming (‎isFork vs ‎fork).

Additional information

• Would you be willing to help implement this feature?