diff --git a/pr_agent/git_providers/gitea_provider.py b/pr_agent/git_providers/gitea_provider.py
index 9f271556..5eef4362 100644
--- a/pr_agent/git_providers/gitea_provider.py
+++ b/pr_agent/git_providers/gitea_provider.py
@@ -542,6 +542,10 @@ class GiteaProvider(GitProvider):
         if not self.pr:
             self.logger.error("Failed to get PR branch")
             return ""
+        
+        if not self.pr.head:
+            self.logger.error("PR head not found")
+            return ""
 
         return self.pr.head.ref if self.pr.head.ref else ""