【Perf】更新API；

UpmGitTool/Assets/Scritps/Core/CoreFunction.cs

@@ -214,7 +214,7 @@ namespace UpmGitTool
             }
         }
 
-        public static void StartFetchGitUrl(UPackage pkg)
+        public static void StartFetchGitUrl(this UPackage pkg)
         {
             if (pkg == null) return;
             var gitUrl = pkg.PackageUrl;

UpmGitTool/Assets/Scritps/UI/Controller/UICtrl_GitFetchView.cs

@@ -53,7 +53,7 @@ namespace UpmGitTool.UI
         private void StartFetch()
         {
             if (package != null && package.IsGit)
-                CoreFunction.StartFetchGitUrl(package);
+                package.StartFetchGitUrl();
             UpdateGitState();
         }