[PATCH] git push --track

Hi,

I'd like a feature to automatically "transform" a non-tracking local  
branch into a tracking branch on push. A patch to do that is attached.

Usage:

git branch mybranch
git checkout mybranch
...
git push --track origin mybranch:mybranch

will not just perform the push, but also write a block

[branch "mybranch"]
         remote = origin
         merge = refs/heads/mybranch

to the git configuration so the branch becomes tracking.

This should be a simpler alternative to the otherwise usual procedure

git push origin mybranch:mybranch
git config branch.mybranch.remote origin
git config branch.mybranch.merge refs/heads/mybranch

Are there any chances for this getting added to official git - or an  
alternate convenient way convert a local to a tracking branch?

Best regards,

Rudolf