Use CVS/Subversion/... as a fast way to update apt lists?

["Nikita V. Youshchenko" <yoush@cs.msu.su>]

Hello.

On the topic of all those talks about reducing network traffic caused by
apt-get update, without putting too high load into server (as rsync does).

Can't CVS (or Subversion or other similar tool) solve this problem?
Seems that if apt-get update will turn into 'cvs update', it will save
network traffic, and not put too much load into server. The cost is the
disk overhead of keeping the "repository" on the server side (previous
version of apt-lists are probably not very needed), but such overhead could
probably be avoided by some technical trick (that will e.g. periodically
remove ancient data in such way that normal update procedure will not
suffer).