Git shows differences even after `push --force`?

Simplification :

In my master branch I've added some garbage.
Then I pushed it to origin/master

Later I've discovered that it was a mistake to add that garbage. I know I can/should create a revert commit.

But I didn't. I did a git reset --hard

But now I want that the origin/master will look exactly the same as my local.

Obviously I can't push becuase git tells me to pull before push.

So I did push --force:

But even after that , sourcetree shows that they are not the same :

Even though if I check for changes , I see no changes :

Question:

If remote master and local master has no differences , why does sourcetree show me pull ?

Even git status shows I'm ok (without pull) :