how to discard unstaged changes in git code example

Example 1: discard unstaged changes git

#For all unstaged files in current working directory use:
git checkout -- .
#For a specific file use:
git checkout -- path/to/file/to/revert

Example 2: git undo all changes

git reset --hard

Example 3: git delete unstaged files

git clean -df

Example 4: undo unstaged changes git

git checkout -- .