I thought that was known for a little while now? That they descended from khazars, but jews didn't like it since it went against their narrative and made genealogy sites change their findings. I even have a book written by a jew called The Thriteenth Tribe (haven't read it yet) that talks about jews being descended from kazars. https://forward.com/news/breaking-news/381367/why-did-23andme-tell-ashkenazi-jews-they-could-be-descended-from-khazars/