How to discard all local changes in Git?

When you modify files, then they go to modified state which you can confirm by running git status.

$git status
On branch master
Changes not staged for commit:
  (use "git add ..." to update what will be committed)
  (use "git checkout -- ..." to discard changes in working directory)

        modified:   sales.csv
        modified:   order.csv

no changes added to commit (use "git add" and/or "git commit -a")

Here, you can see that sales.csv and order.csv files are modified.

You can even view the difference between the modified files and the last commit by running git diff command.

To discard the changes, you have to run git checkout command:

$git checkout -- sales.csv
$git checkout -- order.csv

You have to replace sales.csv and order.csv with filenames that you want to undo.

Note: If you want to unstage files, then visit this page: How to remove files from staging?

The process of discarding changes can be understood with the help of the below image: