const io/fs.ModeSetgid

4 uses

	io/fs (current package)
		fs.go#L183: 	ModeSetgid                                     // g: setgid

	archive/zip
		struct.go#L353: 	if mode&fs.ModeSetgid != 0 {
		struct.go#L381: 		mode |= fs.ModeSetgid

	os
		types.go#L47: 	ModeSetgid     = fs.ModeSetgid     // g: setgid