git-svn
is not the right tool for one-time conversions of repositories. It is great if you want to use Git as frontend for an existing SVN server, but for a one-time conversion you should not use git-svn
, but svn2git
which is much more suited for this use-case.
There are pleny tools called svn2git
, the probably best one is the KDE one from https://github.com/svn-all-fast-export/svn2git. I strongly recommend using that svn2git
tool. It is the best I know available out there and it is very flexible in what you can do with its rules files.
You will easily be able to configure it for your layout to get the result you want and expect.
If you are not 100% about the history of your repository, svneverever
from http://blog.hartwork.org/?p=763 is a great tool to investigate the history of an SVN repository when migrating it to Git.