How do I get the Tri Oz jersey?

Tri Oz rides show when searching for jersey unlocks. I rode on different days, thinking that some rides unlock the jersey while others might not. There seem to be three weekly repeating rides. The one I haven’t done is on Tuesday morning at 3am in my time zone. Is that what I would have to ride to get the jersey? Or is the jersey no longer available, or only available during seasonal events?

Didn’t get any replies after a week, so changed topic category to see if that would help anyone see it.