Integration with fugitive for git-grep

[blueyed]

When using git-grep with another branch etc, the results look like master:path/to/file|….

It would be great if going to them would open them via fugitive, as :Gedit master:path/to/file would do.
(it is quite simple / ok to call :Gedit % after going to result (which is an empty buffer then), but would be nice to have better integration by default).