What If battle Thor vs Sentient Mjolnir

What if Thor's hammer became sentient and began to attack Thor who would end up winning. Scenario Thor throws is hammer and in mid flight becomes sentient and become tired of him just treating it like on Object and wanted to fight. Who would win? So a Marvel odd take of Naruto vs Naruto's clones

Mjolnir probably could just fly at light speed into space then just smack down into Thor. Also it could probably just hammer him with lightning. And as it isn't bound to follow Thor it can just zip out of his hand if he caught it.

This would be a quite amusing fight.

It would be a bad day of Thor