CNN version:
https://edition.cnn.com/2025/04/03/science/ancient-dna-green-sahara-mummies/index.html
Nature source paper:
https://www.nature.com/articles/s41586-025-08793-7
The interesting bit is that the analysis shows strong signs of genetic isolation, but they have domesticated animals, so probably not recent migrants but have perhaps picked up domestication through long range cultural but not genetic exchange.