Of course you can wear the lower body part of the hoody,but leaving the top covering your head indoors is like being allowed to wander around wearing a mask. Faces should be clearly seen in cameras.
It wouldn't hurt also if stores put a extra camera at eye level. Get a direct shot of the face- so to speak.
They say no backpacks allowed- It should be the same for a head covering hoody in place.
Why would you need to wear it on your head indoors if not to make people worry?