How to find 100 largest repos for a past date?

I found out how to get the 100 largest repos by forks here:

http://stackoverflow.com/questions/13745285/how-to-find-the-100-largest-github-repositories-for-a-past-date

However, that solution does not work on 2011 data. Is there a way this can be extracted?

Start with the linked Stack Overflow approach and investigate why it does not work for 2011 data. Confirm whether the historical repository and fork data can be extracted, and document or demonstrate a way to obtain the 100 largest repositories for that date.

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