fix: key to
diff --git a/plugins/refdiff/tasks/refs_pr_cherry_pick_calculator.go b/plugins/refdiff/tasks/refs_pr_cherry_pick_calculator.go
index a8f1d78..09c746b 100644
--- a/plugins/refdiff/tasks/refs_pr_cherry_pick_calculator.go
+++ b/plugins/refdiff/tasks/refs_pr_cherry_pick_calculator.go
@@ -92,7 +92,7 @@
 
 		var parentPrId string
 		err = db.Model(&code.PullRequest{}).
-			Where("key = ? and base_repo_id = ?", parentPrKeyInt, repoId).
+			Where("`key` = ? and base_repo_id = ?", parentPrKeyInt, repoId).
 			Pluck("id", &parentPrId).Error
 		if err != nil {
 			return err