git-p4: Importing multiple p4 prods into same git repo

Hi,
 I have the p4 layout as follows:
1. //depot/prod/devel/main
2. //depot/prod/devel/hacks

where #2 is a sort of fork of #1. There are lot of common objects
between them and #2 can trace its history to #1. I would like to
import both the above paths under the same git repository as 2 remote
branches so that they can share objects and reduce overall size. Is
this possible using 'git-p4'. I went through the code and got lost in
the complexities...
 I urgently need this to consolidate multiple paths under the same git
folder and be able to serve them soon. Any help is greatly
appreciated.

-dhruva