The setup:

* a laptop L
* an office server hosting various repositories SOffice
* a customer's database server SCustomer

I'm writing code on L for a customer, and regularly want to push it both to SOffice as well as SCustomer.

I know I could use a `changegroup` hook to push to a third repository from the second (as described [in this answer](https://stackoverflow.com/q/3298493/1600)), but this requires that the second can reach the third network-wise.

In my case, each is behind a firewall, and only my laptop typically accesses both through a VPN (or by being physically there). I could set up the VPN on SOffice to get to SCustomer, but I'd rather not.

Is there a way I can, say, set `default` to *two* repositories?