Git: Discard all changes on a diverged local branch

Question

I have a local topic branch that\'s tracking a remote branch. For the sake of argument, say the commit histories look like this:

A--B--C--O1--O2--O3 (origin/phob         


        

Answer 1

Delete the branch, then re-create it:

$ git branch -D phobos
$ git checkout --track -b phobos origin/phobos