`Commands.Fetch` could not resolve file based remote path

Reproduction steps

1. Create bare repository
2. Clone that
3. Try to fetch using Commands.Fetch

Expected behavior

Commands.Fetch should work as git fetch works

Actual behavior

failed to resolve path 'file://PAHT/TO/BARE/REPOSITORY': The filename, directory name, or volume label syntax is incorrect.

Version of LibGit2Sharp (release number or SHA1)

0.26.2

Operating system(s) tested; .NET runtime tested

Windows 10 x64 - .NET 6

首先，在 Windows 10 和 .NET 6 上使用 file:// remote 對 bare repository 執行 Commands.Fetch 來重現問題，並將結果與 git fetch 進行比較。追蹤 Commands.Fetch 使用的路徑解析進入點；當針對回報的 remote path 執行 fetch 時不再出現檔案名稱或目錄語法錯誤且成功完成，即表示完成。