ffpb: only show 'git pull from ... to ...' message if something has changed

modules/ffpb.py

@@ -98,8 +98,9 @@ def ffpb_updatepeers(bot):
 	peers_repo.remotes.origin.pull()
 	new_head = peers_repo.head.commit
 
-	print('git pull: from ' + str(old_head) + ' to ' + str(new_head))
 	if new_head != old_head:
+		print('git pull: from ' + str(old_head) + ' to ' + str(new_head))
+
 		added = []
 		changed = []
 		renamed = []