I have run git status and
# On branch master # Your branch is ahead of 'origin/master' by 4 commits. # (use "git push" to publish your local commits) # # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: app/views/layouts/_header.html.erb # no changes added to commit (use "git add" and/or "git commit -a") I want undo all the 4 commits and changes not staged for commit before commiting to my remote repository. How can i do this?