Fix submodule parsing (#32571)

Fix #32568, parse `.gitmodules` correctly

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/git/commit_info.go

@@ -7,5 +7,5 @@ package git
 type CommitInfo struct {
 	Entry         *TreeEntry
 	Commit        *Commit
-	SubModuleFile *SubModuleFile
+	SubModuleFile *CommitSubModuleFile
 }