How not to commit a specific file in git?

Question

git

Please tell me, there is a file, it cannot be removed from the index and added to .gitignore, but I need to make sure that changes to this file do not get into the commit just for me.

Answer 1

git add -u
git reset -- specific .txt file

Answer 2

git update-index --assume-unchanged <file>
more details - ingit update-index --help