Get SVNKit source code with the svn command line client
$ svn co http://svn.svnkit.com/repos/svnkit/trunk svnkit
Go to the checked out directory
$ cd svnkit
Use [http://ant.apache.org ANT] to build svnkit.jar
$ ant build-standalone
svnkit/lib directory will contain a library jar file (svnkit.jar) built and the Ganymed library jar (ganymed.jar) that is needed if you are going to use svn+ssh connection protocol.