Remove stranger repository

[Thiếu tá Phạm Xuân Bách]

For some months ago, Suddenly when I start Sourcetree, it have a new Repository with same name as my Windows username. How to delete it?

I don't see it in my Local Repository  list, and it loading forever with much (random?) files and burn my RAM and CPU. I have to close it every time I start Sourcetree. I try to find a way to delete it with no luck.

I'm using Sourcetree version 3.3.6