How to always use --merge option in git rebase?

Hi,

We have a huge repository ~10 GB. After some integrations the following happens:

git rebase master

First, rewinding head to replay your work on top of it...
fatal: Out of memory, malloc failed (tried to allocate 55012353 bytes)

There is a workaround to use 'git rebase --merge' instead. But I
couldn't find a way to make the merge-based rebase the default one. Is
it possible?
git version 1.7.10.msysgit.1

-- 
Alexander Kostikov