From 8ffbe4b03d862bbcaa7bfddce7a3d13ee19f0341 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Sep 12 2017 13:03:43 +0000
Subject: Raise an exception if no commit hash was found


Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

---

diff --git a/pagure/lib/git.py b/pagure/lib/git.py
index 9337b06..6eda762 100644
--- a/pagure/lib/git.py
+++ b/pagure/lib/git.py
@@ -1361,6 +1361,11 @@ def get_diff_info(repo_obj, orig_repo, branch_from, branch_to, prid=None):
         except KeyError:
             pass
 
+    if not commitid:
+        raise pagure.exceptions.PagureException(
+            'No branch from which to pull or local PR reference were found'
+        )
+
     diff_commits = []
     diff = None
     orig_commit = None