Reset a file or full

To reset a file to the original file

To reset a file to its orginal file (remove your changes to the file abc.txt)

# With Git 2.23
git restore abc.txt  

# With older version of git
git checkout -- abc.txt

To do full reset a file (reset the file back to original remote format)

git checkout @ -- abc.txt

git checkout HEAD -- abc.txt

Hard reset of a single fileStack Overflow

To reset a local branch exactly to the remote

git fetch origin
git reset --hard origin/master