repo.Commits.QueryBy(filename) slow on large repos

Reproduction steps

1): Clone a large repo
2): run this function on that repo with some random file:

public IEnumerable<string> TestSlow(string filename)
{
    using (var repo = new Repository(repoRoot))
    {
        string path = filename.Substring(repoRoot.Length + 1).Replace("\\", "/");
        foreach (LogEntry entry in repo.Commits.QueryBy(path))
        {
            yield return entry.Commit.Author.ToString();
        }
    }
}

3. run this command on the same file: "git log --follow --oneline -- "

Expected behavior

I expect similar time to be taken by TestSlow and the git log command above

Actual behavior

The git log command finishes in about 1.6 ms on my repo
The TestSlow command takes about 70 seconds.

Here is what I see in my profiler:

Version of LibGit2Sharp (release number or SHA1)

0.27.0-preview-0017
0.26.1
0.24.1

Operating system(s) tested; .NET runtime tested

.NET Framework 4.7.2 on Windows 10

先在大型儲存庫中重現使用 repo.Commits.QueryBy(path) 的 TestSlow 與 git log --follow --oneline -- <file> 之間的比較。使用回報的 profiler 檢視畫面與計時結果，找出 QueryBy 將時間花在哪裡。在保留傳回的 commit 項目的同時，將大型儲存庫上的執行時間降低至接近可比較 git 命令的程度，即表示完成。