Improvement to update mechanism

check_update.py

@@ -20,7 +20,7 @@ def check_and_apply_update(repo=local_repo, remote_name='origin'):
             # We can just fastforward
             elif merge_result & pygit2.GIT_MERGE_ANALYSIS_FASTFORWARD:
                 repo.checkout_tree(repo.get(remote_id))
-                master_ref = repo.lookup_reference('refs/heads/' + branch)
+                master_ref = repo.lookup_reference('refs/remotes/origin/' + str(branch))
                 master_ref.set_target(remote_id)
                 repo.head.set_target(remote_id)
                 result = 'Bazarr updated to latest version and restarting.'