CommitLog order does not reflect order of commits.

Hi!

I am currently working on an E2E test which involves creating many commits, I am running into some issues however.
The repository's commit log order is different compared to the order of commits I have made.

Reproduction steps

public LibGitRepositoryBuilder WithManyCommits(int numberOfCommits, string commitMessage)
{
    for (int i = 0; i < numberOfCommits; i++)
    {
        // Create & stage file.
        var filePath = Path.Combine(_repoPath, $"{Guid.NewGuid()}.txt");
        File.Create(filePath).Dispose();

        var relativeFilePathToRoot = Path.GetRelativePath(_repository.Info.WorkingDirectory, filePath);
        Commands.Stage(_repository, relativeFilePathToRoot);
        _repository.Commit($"{commitMessage}-{i}", new Signature("bot", "bot@noreply.com", DateTimeOffset.UtcNow), new Signature("bot", "bot@noreply.com", DateTimeOffset.UtcNow));
    }

    return this;
}

var repo = new LibGitRepositoryBuilder(path)
    .WithManyCommits(100, "Hello world")
    .Build();

Expected behavior

• "Hello world-99"
• "Hello world-98"
• "Hello world-97"
• ....

Actual behavior

Version of LibGit2Sharp (release number or SHA1)

0.30.0

Operating system(s) tested; .NET runtime tested

OS
Edition Windows 11 Pro for Workstations
Version 23H2
Installed on ‎22/‎02/‎2024
OS build 22631.3593
Experience Windows Feature Experience Pack 1000.22700.1003.0

.NET
.NET 8.0

Start by reproducing the ordering problem with the shown LibGitRepositoryBuilder.WithManyCommits example and inspect how the repository commit log is enumerated. No source file or test is named in the issue, so locate the CommitLog implementation and existing log tests first. Done means commits created sequentially appear newest-first as expected.