alternative to https://github.com/mhinz/neovim-remote
$ go install github.com/ykpythemind/neovim-remote-go/cmd/neovim-remote
neovim-remote --remote-wait go.mod
see https://github.com/mhinz/neovim-remote/blob/master/README.md
if has('nvim')
let $GIT_EDITOR = 'neovim-remote -cc split --remote-wait'
endif
autocmd FileType gitcommit,gitrebase,gitconfig set bufhidden=delete