Diff compare with DiffTargets.WorkingDirectory is terribly slow

Reproduction steps

Compare commit to the working tree directory on a relatively big repository

 repository.Diff.Compare<TreeChanges>(
              repository.Head.Tip.Tree,
              DiffTargets.WorkingDirectory)

which takes a long time or never completes. Comparing the working trees of two commits works instantly

                    var branchDiffResult = repository.Diff.Compare<TreeChanges>(
                       targetCommit.Tree,
                        repository.Head.Tip.Tree,
                        compareOptions);

Additionally, doing repository.RetrieveStatus() is also slow, but not that slow.

Expected behavior

The speed of the two matches.

Actual behavior

Comparing to working directory is terribly slow.

Version of LibGit2Sharp (release number or SHA1)

0.27.0.0

Operating system(s) tested; .NET runtime tested

4.72, windows 11

在一个相对较大的 repository 上使用 repository.Diff.Compare(repository.Head.Tip.Tree, DiffTargets.WorkingDirectory) 重现性能变慢的问题，然后将其与 commit-to-commit 重载和 repository.RetrieveStatus() 进行比较。跟踪工作目录比较路径，并测量时间花费在哪里。当工作目录比较以与 commit-to-commit 比较相当的性能完成时，即表示完成。