This question is not about how to merge two git repos; that problem has already been discussed (keywords: "submodules", "subtree merging").
The question here is, how to merge two GitHub repos?
I wanted to preserve as many GitHub features/data from both GitHub repos as possible. Most importantly, I want to preserve issues and wikis from both GitHub repos.
How might I achieve that?
Info:
I have just learnt that GitHub wikis are git repos themselves (summary: git://github.com/you/proj.wiki
), and I have successfully pushed changes to a wiki-repo of mine.