Daniel BarkalowJust in case someone else is considering trying it, I've just written a pair of programs to transfer a commit and everything it uses directly over ssh (i.e., without rsync); it is also clever enough to reject anything that either doesn't inflate or doesn't hash correctly. It also doesn't transfer anything that the recipient already has or doesn't need.
I have some more cleaning to go on it, but I could post it if others want to hack on it.
-Daniel *This .sig left intentionally blank*