i'm guessing the post date is the time of last edit, not the real date
   so some earlier system-quack-arm64-ab-vanilla .
   I should probably get all of them.
   1028
   the last quack was v222
   additional quacks: v221, v220, v219, v218, v217, v216, v215, v214,
   v213, v212, v211, v210, v209, v208, v207 .
   it would make sense to see if any of those are prior to the release of
   the phone, in which case I could skip testing them.
   url format appears to be
   [1]https://github.com/phhusson/treble_experimentations/releases/downloa
   d/TAG/system-quack-arm64-ab-vanilla.img.xz
   1033

References

   1. https://github.com/phhusson/treble_experimentations/releases/download/TAG/system-quack-arm64-ab-vanilla.img.xz