Stashes.Add taking forever to complete

I have a local Git repository that is 1.5 Gigs in size.... 34 579 source files in it. It takes overs 2 minutes (135 551 ms) to complete a "stash add", for only 1 modified file in the repo.... which is not acceptable.

Git-scm does it in approximately 2 seconds.

Reproduction steps

Expected behavior

Actual behavior

Version of LibGit2Sharp (release number or SHA1)

I was using the Libgit2Sharp NuGet package version 0.26.1... I have tried 0.26.0.... same results. Then, I have tried with 0.25.4... it worked in less than 2 seconds. Something broke in version 0.26.x

Operating system(s) tested; .NET runtime tested

It is in a Visual Studio Profesionnal 2017 C# project, under Windows 10 64 bits. Framework 4.6.1.

まず、説明されている大規模なリポジトリで LibGit2Sharp パッケージ 0.26.x と 0.25.4 を使用して、報告された stash-add の処理時間を再現し、その後 Git と動作を比較します。0.26.x のリグレッションを特定し、stash add が以前と同程度、または Git と同程度の時間で完了することを確認します。