0006-Allow-using-.git-directory-instead-of-gitdir-redirec.patch

From 878c2c66dbf82b90bd16536439c039c94bac7457 Mon Sep 17 00:00:00 2001
From: Chris Rummel <crummel@microsoft.com>
Date: Tue, 4 Aug 2020 20:28:53 -0500
Subject: [PATCH 6/6] Allow using .git directory instead of gitdir redirect in
 submodules.

---
 src/Microsoft.Build.Tasks.Git/GitDataReader/GitRepository.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Microsoft.Build.Tasks.Git/GitDataReader/GitRepository.cs b/src/Microsoft.Build.Tasks.Git/GitDataReader/GitRepository.cs
index 196c57d..1427005 100644
--- a/src/Microsoft.Build.Tasks.Git/GitDataReader/GitRepository.cs
+++ b/src/Microsoft.Build.Tasks.Git/GitDataReader/GitRepository.cs
@@ -209,6 +209,10 @@ private string ReadHeadCommitSha()
         /// <returns>Null if the HEAD tip reference can't be resolved.</returns>
         internal string ReadSubmoduleHeadCommitSha(string submoduleWorkingDirectoryFullPath)
         {
+            if (Directory.Exists(Path.Combine(submoduleWorkingDirectoryFullPath, ".git")))
+            {
+                return File.ReadAllText(Path.Combine(submoduleWorkingDirectoryFullPath, ".git", "HEAD"));
+            }
             var gitDirectory = ReadDotGitFile(Path.Combine(submoduleWorkingDirectoryFullPath, GitDirName));
             if (!IsGitDirectory(gitDirectory, out var commonDirectory))
             {
-- 
2.18.0