We are currently moving off from Bitkeeper.
As a first step Debian's kernel source tree including NuBus patches was put on CVS tonight.
The CVS module name is debian-linux-2.4.27-nubus.
Don't get confused by another CVS module called linux-nubus.
This seems to be an fairly old kernel source tree.
See CVS project page  for access.
I will try to gather all patches and put them into CVS on the weekend (9-11 Dec).