From 16257f25d7fc5054807eaf8c395040ec7941f170 Mon Sep 17 00:00:00 2001
From: Slim B <slim.b.pro@gmail.com>
Date: Sat, 14 Feb 2026 14:19:56 +0300
Subject: [PATCH] Fix reverse sync false positive after filter reconciliation

Add --ancestry-path to git log in reverse_sync() to prevent old
subrepo history from leaking through reconciliation merge parents.
Without this, every old subrepo commit appears as a "human commit"
triggering a spurious 0-commit PR on the monorepo.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 lib/sync.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sync.sh b/lib/sync.sh
index b2ff277..d24d454 100644
--- a/lib/sync.sh
+++ b/lib/sync.sh
@@ -244,7 +244,7 @@ reverse_sync() {
 
   # 3. Find new human commits (excludes bot commits from forward sync)
   local human_commits
-  human_commits=$(git log "mono-filtered/${mono_branch}..HEAD" \
+  human_commits=$(git log --ancestry-path "mono-filtered/${mono_branch}..HEAD" \
     --oneline --invert-grep --grep="^${BOT_TRAILER}:" 2>/dev/null || echo "")
 
   if [ -z "$human_commits" ]; then