a821 [1] filed a deletion request for supersonic-git [2]: Dead on arrival. It fails to build. Upstream hasn't had a commit for 13 years. There's an open upstream issue (#98) from 2020 that also reports a build failure, which went unanswered.
It seems this package was also submitted by a broken Github action (see similar requests PRQ#69697 to PRQ#69701 for packages resubmitted at around the same time, and check the git log). This package used to exist in 2015 (I found two snapshots on archive.org and there's also a previous AUR commit from 2015), but I could not find a previous deletion request on the list archives. I guess it could have been deleted automatically. No reason to keep this around. Safe to delete. [0] https://github.com/Mach5/supersonic/issues/98 [1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/supersonic-git/