If you are asking for it
probably means that you are on windows, here you have a nice guide to download and compile the SVN:
http://tremulous.net/forum/index.php?topic=3408.0Download the last versions of these programs, how it says, then in the part that says
svn co -r 895 svn://svn.icculus.org/tremulous/trunk Tremulous
Dont use that CMD, use this one:
svn co -r 895 svn://svn.icculus.org/tremulous/trunk Tremulous
replace the 895 with the last revision which right now is 1101, so the command that actually you will use is:
svn co -r 1101 svn://svn.icculus.org/tremulous/trunk Tremulous
By the way, remember to add the patches that you want, because it have all the security fixed but still dont have the most regular patches for make the game alittle more better. If you need more help, PM me.