St Kilda police, Melbourne Australia.
Aside from maintaining enough distance to not get hit, closing the distance against a blunt weapon is the best option. Moving into a clinch removes most of the advantages for the weapon.
Conversely, stepping away keeps you at the effective range which is very bad. The victim here was slow to respond and took a lot of damage, but ended up in a better position toward the end of the video where it ends without a satisfying conclusion. The aggressor even threw away the stick when he realised that it may now be used against him.
The victim is stabbed repeatedly. He used everything he had to defend himself: punches, kicks and throws, and attempted two eye gouges and two groin strikes.
None were effective -the assailant moved his head away when eye gouges attempted and blocked kicks to groin.
It should also be noted that although the victim was stabbed many times, he was still capable of fighting and managed to escape – neither person was incapacitated, and both were capable of continuing the fight.