Fast forward merge: support for multiple branches

Please add a way to quickly fast-forward merge multiple branches.  

In the "branches" view, if I have multiple branches selected, I would like to be able to right click -> fast-forward merge.  

If I right click on "local branches", "origin", or similar, I would like to be able to fast-forward merge them all.

My reason for this is when I like to keep a separate clone that doesn't have any of my local changes in it.  I use this to do merging operations that my have conflicts with my current working tree.  Or to have a clean copy to run comparisons with.  However, this gets out of sync with the upstream frequently since I'm not active in it.