Sometime between 3.30am and 4am, the 50-year-old shop owner was woken after hearing someone outside the store.
A man came to the door and asked by buy some fishing equipment. The owner agreed and as he opened the door, the man pushed the door open causing the owner to stumble backwards. The owner managed to get outside of the shop and was then assaulted with a wooden instrument.
A second man was also present during the attack.
The attack stopped when a passing vehicle stopped to ask the shop owner if he was ok.
The shop owner was taken to Frimley Park Hospital by ambulance where he was treated for a head injury.
Officers have released a description of the man who approached the shopkeeper.
Of mixed race
5ft 6ins to 5ft 8ins
With a small beard
Detective Constable Dawn White, of Aldershot CID, said: “We are keen to hear from anyone who witnessed this incident, particularly the driver and passenger of the vehicle that stopped to assist the victim.
“This was an unprovoked attack and we are keen to trace those responsible.”
Anyone with any information should contact DC Dawn White at Aldershot CID on 0845 045 45 45 or Crimestoppers anonymously on 0800 555 111.