Colin Putney wrote:
> Andreas, to synchronize the two repositories, you should copy to A 
> everything that's only in B and vice versa. In other words, make both 
> repositories contain the union of the two sets of versions. That should 
> make it possible to find intermediate versions when doing diffs.

Doesn't that assume that this requires read-access on both repositories? 
That's not an option.

Cheers,
   - Andreas