Why Pull operations is so Slow?

Hi all, I'm new and I'm developing using this library. I have some problem with pull operations. This is my code:

 Debug.Write("Pulling branch. . .");
            LibGit2Sharp.PullOptions options = new LibGit2Sharp.PullOptions();
            options.FetchOptions = new FetchOptions();
            options.FetchOptions.CredentialsProvider = new CredentialsHandler(
                (url, usernameFromUrl, types) =>
                    new UsernamePasswordCredentials()
                    {
                        Username = this.Username,
                        Password = this.Password
                    });
            Signature author = new Signature(this.Username, this.EmailUser, DateTime.Now);
            Commands.Pull(Repo, author, options);
            Debug.Write("Pulling done.");

I don't uderstand why Pulling ONE FILE (txt 1kb) is so SLOW. Is there anyone help me?

Commands.Pull の呼び出しと FetchOptions および CredentialsProvider の設定から開始します。fetch、認証、pull の各段階を個別に計測し、その後、既存のコメントスレッドを使って、再現可能な低速化と想定完了時間が確立されているかを判断します。原因が特定されるか、範囲が明確なパフォーマンス修正が行われることが完了の条件です。