Information related to releases is on the Releases page.
The CVS repository may be browsed here.
The SVN repository may be browsed at WebSVN or in trac.
Check out from the SVN repository via either of
svn co svn+ssh://svn.cern.ch/reps/sctroddaq svn co https://svn.cern.ch/reps/sctroddaq
The SVN repository librarian may change SVN access permissions by following instructions here which in many cases imply changes to configuration files in
/afs/cern.ch/project/svn/reps/sctroddaq/conf
by user libsctro@lxplus.cern.ch
See also HowToInstallSctRodDaq (and perhaps HowToCompile).