format with gofumpt (#18184)

* gofumpt -w -l .

* gofumpt -w -l -extra .

* Add linter

* manual fix

* change make fmt

modules/git/submodule_test.go

@@ -11,7 +11,7 @@ import (
 )
 
 func TestGetRefURL(t *testing.T) {
-	var kases = []struct {
+	kases := []struct {
 		refURL     string
 		prefixURL  string
 		parentPath string