The koala has been modeled and packed in Blender 2.9. So, you can use from Blender 2.9 to Blender 3.0.
In this product file, you will get:
3D Modeling of a koala named Jety with full-body, clothes, mouth, tongue, shoes
A Blender 2.9 File
OBJ and 4K Textures
Using in both Render Cycles and Eevee
With Sub Surface = 0: Vertices = 16,188 ; Faces = 16,060