Libgit2sharp CheckoutPaths() doesn't undo changes on file with status "NewInIndex, ModifiedInWorkdir".

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Reproduction steps

I have a file inside many folders (for ex : docs/jsons/myfile.json ) in my repository

I staged the file , so it now has the status "NewInIndex".

After that i made changes on that file.

It has now the status "NewInIndex, ModifiedInWorkdir".

My code is the following :

using ( var repo = new Repository("my repo path")
{
CheckoutOptions options = new CheckoutOptions { CheckoutModifiers = CheckoutModifiers.Force };

repo.CheckoutPaths(repo.Head.FriendlyName, new string[] {"docs/jsons/myfile.json"} , options );
}

I also tried to replace " repo.Head.FriendlyName" by "repo.Head.CannonicalName" and by "repo.Head.Tip.Id.Sha"

Expected behavior

I expect the file to get back to its previous content, and to have the status "NewInIndex" again.

Actual behavior

The file's content doesnt change and its status is still : "NewInIndex, ModifiedInWorkdir".

Version of LibGit2Sharp (release number or SHA1)

LibGit2Sharp version 0.26.2

Operating system(s) tested; .NET runtime tested

Window 10 Enterprise

.NET 6.0

Start with the CheckoutPaths API and reproduce the reported state transition for a file marked NewInIndex, ModifiedInWorkdir using the supplied path and CheckoutOptions. Verify that forcing checkout restores the staged content and leaves the file with NewInIndex status, using the reported LibGit2Sharp 0.26.2 behavior as the baseline.