Don't throw an exception when we get the kind of format of ref the create

event gives (only repo name, not `"refs/head/repo"`) (github)

modules/github/module.py

@@ -250,7 +250,10 @@ class Module(ModuleManager.BaseModule):
 
         branch = None
         if "ref" in data:
+            if "/" in data["ref"]:
                 branch = data["ref"].split("/", 2)[2]
+            else:
+                branch = data["ref"]
 
         hooks = self.bot.database.channel_settings.find_by_setting(
             "github-hooks")