From 39edd41567fd9aeac114f2d8181416ed2fb69510 Mon Sep 17 00:00:00 2001
From: "David E. Wheeler" <david@justatheory.com>
Date: Mon, 11 Aug 2025 11:45:44 -0400
Subject: [PATCH] Have git verify the repository

Rather than simply check for the presence of `.git` when `git-save`
exists, run `git rev-parse --is-inside-work-tree` and replace the `.git`
directory when it returns an error. This will fix corrupted `.git`
directories left over from previous builds, as well as missing `.git`
directories.
---
 PGBuild/SCM.pm | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/PGBuild/SCM.pm b/PGBuild/SCM.pm
index fb14d9b..c089038 100644
--- a/PGBuild/SCM.pm
+++ b/PGBuild/SCM.pm
@@ -1060,9 +1060,15 @@ sub _update_target
 	my @gitlog;
 
 	# If a run crashed during copy_source(), repair.
-	if (-d "./git-save" && !-d "$target/.git")
+	if (-d "./git-save")
 	{
-		move "./git-save", "$target/.git";
+		system(qq{git -C $target rev-parse --is-inside-work-tree > $devnull 2>&1});
+		if ($?)
+		{
+			require File::Path;
+			File::Path::remove_tree("$target/.git");
+			move "./git-save", "$target/.git";
+		}
 	}
 
 	chdir $target;