poshgit doesn't report change values when inside the .github directory

[jethas-bennettjones]

System Details

• posh-git version/path: 1.0.0 ~\Documents\PowerShell\Modules\posh-git\1.0.0
• PowerShell version: 7.1.4
• git version 2.31.1.windows.1
• OS: Microsoft Windows NT 10.0.19043.0

Issue Description

I am experiencing a problem with seeing the git status in the prompt when I am in the .github directory.

Here is what I see:

[dahlbyk]

Good find! There are two places we try to detect if we're inside a .git folder, and it turns out path/to/.github starts with path/to/.git:

• posh-git/test/Shared.ps1

  Line 93 in 5a87e8a

  if (!$Path.StartsWith($gitPath)) {

• posh-git/src/GitUtils.ps1

  Line 440 in b79c2dc

  $res = $currentPath.StartsWith($GitDir, (Get-PathStringComparison))

Marking as Up-for-Grabs, if someone wants to take a crack at it.

[jethas-bennettjones]

@dahlbyk I took a stab at it. Please check out the PR.