git merging branches in a bare repository

Question

I would like to create the following setup for my git repos:

I currently have a local git repo with all my working files. I would like to be able to setup a central bar

Answer 1

Note, this can actually be done on a bare repo, but you have to work around the normal interface.

$ git read-tree -i -m branch1 branch2
$ COMMIT=$(git commit-tree $(git write-tree) -p branch1 -p branch2 < commit message)
$ git update-ref mergedbranch $COMMIT