how to discard the changes in git code example

Example 1: git discard changes

git checkout .

Example 2: revert unstaged changes git

git checkout -- path/to/file/to/revert

Example 3: git delete changes

git clean -df
git checkout -- .

Example 4: revert unstaged changes git

git checkout -- .

Example 5: git discard changes

Undoing the changes in the working directory
Use the checkout command in order to checkout the repository’s version.

RUN:
git checkout hello.html