SVN: question on checkout?

[Gerald Pfeifer]

http://gcc.gnu.org/wiki/SvnSetup has the following example for 
checking out the GCC sources under "Checking out a tree"

  svn co svn+ssh://gcc.gnu.org/svn/gcc/trunk 

but this doesn't work for me.  Rather, I'm getting:

  % svn co svn+ssh://gcc.gnu.org/svn/gcc/trunk
  Permission denied (publickey,gssapi-with-mic).
  svn: Connection closed unexpectedly

Should this just read
  svn co svn+ssh://gcc.gnu.org/svn/gcc/trunk
-or- 
  svn co svn+ssh://username@gcc.gnu.org/svn/gcc/trunk
instead?

Gerald