Sometimes when switching between development machines I end up with unwanted differed changes on my local branch that were never pushed to the remote. This results in a message such as:

$ git status
On branch master
Your branch and 'origin/master' have diverged,
and have 1 and 11 different commits each, respectively.
  (use "git pull" to merge the remote branch into yours)
 
nothing to commit, working tree clean

In most cases I just want to pull the changes from the remote and destroy my local un-pushed changes. To do so reset the branch pointer to the remote by executing:

$ git checkout master
$ git reset --hard origin/master