Soon after this exchange, Linus started using a real source management system (BitKeeper, followed by git) for the kernel.
*edit: Didn't look hard enough, according to this: http://git-scm.com/book/en/Getting-Started-A-Short-History-o... it was just files and patches from 1991-2002. Seems crazy from a modern perspective...
Watching another group from the outside is not experience. But what makes you say he even had that? He's pretty consistently suggested he has no time to pay any attention to any of the BSD projects going right back to 1993.