sainnhe [1] filed a deletion request for neovim-forest-night-git [2]:

The upstream has renamed this color scheme as everforest. I've created
a new pkgbase for it (https://aur.archlinux.org/pkgbase/neovim-
everforest-git/), so delete this pkgbase instead.

[1] https://aur.archlinux.org/account/sainnhe/
[2] https://aur.archlinux.org/pkgbase/neovim-forest-night-git/