I ran into this boss super early on, and was getting practically one-shot. Ended up bashing my head against a wall for about an hour, but I managed to beat him on Jedi Master difficulty.
Basically, you jump over each of his unblockable attacks except for the lunge. Around a quarter health bar he'll start hopping around everywhere, kicking up dirt so you'll need to jump back and to the side to dodge that. He always attacks with a pair of bites and will sometimes follow up with an unblockable lunge around half health. At a quarter health he'll start attacking with four bites in quick succession.
I played pretty defensively and made liberal use of light-saber throws. The easiest thing to punish was his unblockable attack where he jumps forward to bull rush you - hop over him and start smacking him from above. The unblockable lunge was also punishable, but a lot more risky since it would usually come directly after parrying a couple normal attacks - dodge to the side and he'll leave an opening for about a second.
Yeah, he was a piece of shit to fight. There's a challenge later on where you fight two at the same time. They aren't nearly as aggressive as in this fight though.