xiota [1] filed a deletion request for matrix-mirage [2]: Upstream project is effectively abandoned. Apparently no one has access to the repository anymore. https://github.com/mirukana/mirage/issues/288#issuecomment-1483976531
A maintained fork is already in AUR: https://aur.archlinux.org/packages/moment [1] https://aur.archlinux.org/account/xiota/ [2] https://aur.archlinux.org/pkgbase/matrix-mirage/
