jsonn/pkgsrc.git, our upstream repository, has been corrupted due to the cvs conversion from cvs.netbsd.org going awry with 'cvs admin -m' usage.
The issue is manifest when trying to merge:
$ git remote -v
origin git@github.com:joyent/pkgsrc.git (fetch)
origin git@github.com:joyent/pkgsrc.git (push)