gitdir

从 Worktree API 开始，并将其与 Repository.Info.WorkingDirectory 进行比较。跟踪 .git/worktrees//gitdir 如何标识 checkout 路径，然后验证新属性返回的确实是 worktree 目录，例如 C:\repo-core。完成的标准是消费者不再需要自行读取并解析 gitdir 文件。

Problem Description

The Worktree API in LibGit2Sharp does not expose any property to retrieve the actual working directory path associated with a worktree (i.e., the folder where the code is checked out).

Currently, the Worktree object only provides:

• Name → the name of the worktree (e.g., "core")
• GitDirectory → the path .git/worktrees/<name>, which does not correspond to the working directory

Due to this limitation, consumers must manually:

1. Read the content of .git/worktrees/<name>/gitdir
2. Use Directory.GetParent() to resolve the real worktree folder path

This approach is both fragile and undocumented.

Expected Behavior

Expose a property like Worktree.WorkingDirectory (similar to Repository.Info.WorkingDirectory) that returns the actual working directory path of the worktree (e.g., C:\repo-core).

Example Workaround

var worktreePaths = new List<string>();
var gitDir = Path.Combine(repoPath, ".git", "worktrees");

foreach (var folder in Directory.GetDirectories(gitDir))
{
    var gitdirFile = Path.Combine(folder, "gitdir");
    if (File.Exists(gitdirFile))
    {
        var gitdirPath = File.ReadAllText(gitdirFile).Trim();
        var worktreePath = Directory.GetParent(gitdirPath)?.FullName;
        if (!string.IsNullOrEmpty(worktreePath))
            worktreePaths.Add(worktreePath);
    }
}

This code reads the .git/worktrees/<name>/gitdir file and manually resolves the worktree’s root folder. A native API would make this more reliable and developer-friendly.