I'm using counsel-git-grep to search inside a project for a specific string, which works great. However, I would like to additionally specify a filetype pattern to reduce the result set. I tried queries like string -- '*.filetype' but none of them worked. I know I can customize the counsel-git-grep-cmd-default but this seems to be a very static approach.
So the question is, is there a way to define a filetype pattern inside a query string of counsel-git-grep?