You can purchase and download this model pack here:
https://www.cgtrader.com/3d-models/character/anatomy/pbr-rigged-mummies-with-2-sets-of-clothing
https://www.turbosquid.com/FullPreview/Index.cfm/ID/1786779
https://blendermarket.com/products/pbr-rigged-mummies-with-2-sets-of-clothing