From a377d0ea43dfe4e8b0d71a8ecca58ace6baba07d Mon Sep 17 00:00:00 2001
From: Tonye Jack <jtonye@ymail.com>
Date: Fri, 16 Dec 2022 12:51:54 -0700
Subject: [PATCH] fix: bug using since_last_remote_commit with force push

---
 diff-sha.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/diff-sha.sh b/diff-sha.sh
index f36425cc704..1b0af7cfd6c 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -223,6 +223,10 @@ else
   if [[ -z $INPUT_BASE_SHA ]]; then
     if [[ "$INPUT_SINCE_LAST_REMOTE_COMMIT" == "true" ]]; then
       PREVIOUS_SHA=$GITHUB_EVENT_BEFORE
+      
+      if ! git rev-parse --quiet --verify "$PREVIOUS_SHA^{commit}" 1>/dev/null 2>&1; then
+        PREVIOUS_SHA=$(git rev-parse origin/"$CURRENT_BRANCH")
+      fi
     else
       PREVIOUS_SHA=${COMMON_ANCESTOR:-}