Retrieving less data on cvsup?

[Diego Calleja <diegocg@xxxxxxxxx>]

Hi,

I recently cvsup'ed the FreeBSD ports list. Syncing the ports database has
always been painful with slow connections, even with compression, specially
with freebsd's ports. I've always wondered if there's some way of not
downloading some of the files until I use them, like say
/usr/ports/foo/files/file.patch, which I'm not going to use until I install
the program, if I install it. I've diving trough the handbook but I didn't
find anything, or I missed it. It's possible to do something like that?