I have now moved the Cyberduck source to a subversion repository using cvs2svn. The head of the repository can now be checked out using
svn co or a specific branch using for example svn co

cvs2svn Statistics:
Total CVS Files: 3155
Total CVS Revisions: 27819
Total Unique Tags: 6
Total Unique Branches: 34
CVS Repos Size in KB: 126719
Total SVN Commits: 1647
First Revision Date: Mon Feb 10 21:12:49 2003
Last Revision Date: Sun Nov 27 15:04:31 2005