Git branch

Hi,

I have a central bare repository B and two non-bare repositories A1 and A2.
Both A1 and A2 have B as the origin. The way I do it is that every time I
create a branch in A1, say branchA, I manually enter the following lines in
the .git/config files of A1 and A2
[branch "branchA"]
    remote = origin
    merge = refs/heads/branchA

Then I create a branch in the bare repository B called branchA. Once this is done, all the push and pull works smoothly between the two repositories.

Just wondering, is there a better way to do this? :)