Stupid CVS question

I've been using the cvs,which I assumed was pre 6.5, copy of postgresql in
a project I'm working on. With the recent talk of a 6.4.3 being released I
was wondering which version cvs actually reflects.  I'm green with CVS so
if I'm missing something obvious feel free to whack me on the head.
Thanks!

I log into cvs and download like this

cvs -d :pserver:anoncvs@postgresql.org:/usr/local/cvsroot login
cvs -d :pserver:anoncvs@postgresql.org:/usr/local/cvsroot co pgsql

->->->->->->->->->->->->->->->->->->---<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<
James Thompson    138 Cardwell Hall  Manhattan, Ks   66506    785-532-0561 
Kansas State University                          Department of Mathematics
->->->->->->->->->->->->->->->->->->---<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<