Abandon git local branch

I've merged, I've commited changes locally, but I have not decided to push it or not, so I leave it there. After several days, I want to totally abandon my local branch.

I would do below:

1. git checkout master
   It will just tell you that your local branch is different from remote.
2. git reset --hard origin/master
   This is the real effect command, it will force your local to be exactly same as remote.