I can update my repository at https://github.com/salty-horse/garglk, if this is the direction you wish to go.
In the end, as long as the official repository owner is responsive to
merge requests and/or a collaborator list is used, that's enough for me.
I do think it should be an import of the Google Code version, though,
so the issues list comes over. Neither the salty-horse nor the
timofonic repos have a copy of the issues as it currently stands.
Using the "Export to Github" option from Google Code will automatically
carry over the branches (as well as the wiki and issues). Is there a
good reason not to just remove any existing garglk repo on github and
create a new one via Google's export tool?