hgsubversion: Do not clone from old svn versions
Hint: Do not clone from old svn versions (e.g. 1.3) - doesnt work or buggy. Instead, clone the svn repository to a local svn repository, e.g. by:
svnadmin dump > mydump in the old svn version, on server
svnadmin create (local) - in actual svn version
svnadmin load < mydump (local) - in actual svn version
To do this, you need only svn command line client on your local machine.
This hint should be included into doc, so folks would not fall into this trap.