The site is commited to SVN version control. You need an account for checking out and commiting updates.
The workflow is to *always* update you local tree before commiting:
svn ci public/file.php -m "Some intelligent and short comment."
Not all content belongs under version control, i.e. content on the site that is automatic updated from elsewere. Add ignore flag in these:
svn ci . -m "Added ignore flag in RPM-repository."