It looks like some commits had svn.ruby-lang.org in the git-svn-id:
line in the past, and all of those got corrected to ci.ruby-lang.org
otherwise, I think history looks intact.

I just needed to stop and verify there wasn't anything wrong with the
repo (there doesn't appear to be).

In retrospect, having the full URL in git-svn commit messages
was probably a mistake.  Too late to change now, though :/