To make the whole HG management easier, we setup mercurial-server, which allows maintenance over HG itself.
So in the next time we will slowly move the repos to the new location:
SSH URL: ssh://email@example.com/<project>
currently, there is no automatic http link to the repos. Those are either symlinked to the old location or will be available at:
HTTP URL: http(s)://hg.openttdcoop.org/<project>
Projects, which are already located at http://mz.openttdcoop.org/hg/ will still be readable at that location. (New projects won't.)