optimising a push by fetching objects from nearby repos

[Sitaram Chamarty <sitaramc@gmail.com>]

Hi,

Is there a trick to optimising a push by telling the receiver to pick up
missing objects from some other repo on its own server, to cut down even
more on network traffic?

So, hypothetically,

     git push user@host:repo1 --look-for-objects-in=repo2

I'm aware of the alternates mechanism, but that makes the dependency on
the other repo sort-of permanent.  I'm looking for a temporary
dependence, just for the duration of the push.  Naturally, the objects
should be brought into the target repo for that to happen, except that
this would be doing more from disk and less from the network.

My gut says this isn't possible, and I've searched enough to almost be
sure, but before I give up, I wanted to ask.

thanks
sitaram

Milki: I'm sure you won't mind the cc, since you know the context :-)