From f4f9e067a04535da0874ebe97c94041f0298938e Mon Sep 17 00:00:00 2001
From: Scot Breitenfeld <brtnfld@hdfgroup.org>
Date: Thu, 9 Jan 2025 11:54:22 -0600
Subject: [PATCH] fix of unrelated histories

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 832971a..3bcc604 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ help:
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
 	git submodule init
-	git submodule update --remote --merge
+	git submodule update --remote --merge --allow-unrelated-histories
 	if [ ! -d $(BUILDDIR) ]; then mkdir -p $(BUILDDIR); fi
 	cp -r ./images "$(BUILDDIR)"
 	@$(SPHINXBUILD) -E -n -c . -b html source "$(BUILDDIR)" $(SPHINXOPTS) $(O)