So, technically, this is what it would look like if the Moon were a disco ball AND orbited Earth at the same distance as the International Space Station, i.e. roughly 420 kilometers (260 miles) above the surface of the Earth. But that doesn't make it any less incredible looking.
This fantastic animation is by Nick of Yeti Dynamics (the same guy behind this simulation of a normal, non-disco-ball moon at a distance of 420km) and comes by way of Michael Stevens of Vsauce. Some good stuff in here from Stevens about Roche limits (if the moon were ever suddenly teleported to so close a distance, it would promptly disintegrate... worth it?) and earthshine – although it's worth the watch for Nick's simulations alone. The one that envisions a giant, single-plane mirror orbiting Earth is especially awe-inspiring.