MarsSeed [1] filed a deletion request for docker-volume-gc-storage-git [2]:
Broken VCS package from 2018. Upstream not developed since 2016. [a] [a]: https://github.com/craimbert/docker-volume-gc-storage [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/docker-volume-gc-storage-git/