Unfortunately Hamas has fuel and keeps firing rockets. It’s estimated that they have a 4 month supply of food, fuel and water available for their own needs – which they refuse to share to the people they supposedly govern.
It should be a simple matter to determine a weak point in the defense of these caches and an unruly mob of Palestinians could overpower any guards and easily gain access to these needed resources.
Hamas is committing war crimes. It’s their very nature.