diff --git a/get-base-sha.sh b/get-base-sha.sh
index 32bb61cb640..b80a961da54 100644
--- a/get-base-sha.sh
+++ b/get-base-sha.sh
@@ -21,18 +21,4 @@ if [[ -n "$INPUT_SINCE" ]]; then
   echo "::set-output name=base_sha::$BASE_SHA"
 elif [[ -n "$INPUT_BASE_SHA" ]]; then
   echo "::set-output name=base_sha::$INPUT_BASE_SHA"
-elif [[ "$INPUT_SINCE_LAST_REMOTE_COMMIT" == "true" ]]; then
-  LAST_REMOTE_COMMIT=""
-
-  if [[ "$GITHUB_EVENT_FORCED" == "false" ]]; then
-    LAST_REMOTE_COMMIT=$GITHUB_EVENT_BEFORE
-  fi
-
-  if [[ -z "$LAST_REMOTE_COMMIT" || "$LAST_REMOTE_COMMIT" == "0000000000000000000000000000000000000000" ]]; then
-    LAST_REMOTE_COMMIT=$(git rev-parse "$(git branch -r --sort=-committerdate | head -1 | xargs)")
-  fi
-  if [[ "$INPUT_SHA" == "$LAST_REMOTE_COMMIT" ]]; then
-    LAST_REMOTE_COMMIT=$(git rev-parse "$INPUT_SHA"^1)
-  fi
-  echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
 fi