How to make your RipgrepFzf not go to first place when mult select?

- [x] I have fzf 0.23.0 or above
- [x] I have read through https://github.com/junegunn/fzf.vim/blob/master/README.md
- [x] I have read through https://github.com/junegunn/fzf/blob/master/README-VIM.md
- [x] I have read through the manual page of fzf (`man fzf`)
- [x] I have searched through the existing issues

I copy your function

```
function! RipgrepFzf(query, fullscreen)
let command_fmt = 'rg --column --line-number --no-heading --color=always --smart-case -- %s || true'
let initial_command = printf(command_fmt, shellescape(a:query))
let reload_command = printf(command_fmt, '{q}')
let spec = {'options': ['--phony', '--query', a:query, '--bind', 'change:reload:'.reload_command]}
call fzf#vim#grep(initial_command, 1, fzf#vim#with_preview(spec), a:fullscreen)
endfunction
```

want to use it to replace another plug [ack.vim](https://github.com/mileszs/ack.vim)

Only one problem is when mult select, it will open a qf and go to first place, how to change this not go to first place, only open qf?