Why does git output Everything up-to-date?

Question

Python

I do everything as usual.
git add .
git commit -m "name"
git push heroku master

But for some reason the console outputs one line - Everything up-to-date

Answer 1

Solved the problem.
git branch
git checkout master
git commit -m "name"
git push heroku master

Answer 2

git add .; git commit -m 'added README'; git push -u origin master