Revise the upgrade local charm to use the GetCharmURLOrigin

instead of passing channel to the SetCharm

Author: cderici

juju/application.py

@@ -633,10 +633,6 @@ async def refresh(
         :param str switch: Crossgrade charm url
 
         """
-        if path is not None:
-            await self.local_refresh(channel, force, force_series, force_units,
-                                     path, resources)
-            return
         if resources is not None:
             raise NotImplementedError("resources option is not implemented")
 
@@ -659,6 +655,11 @@ async def refresh(
         charm_url = switch or charm_url_origin_result.url
         origin = charm_url_origin_result.charm_origin
 
+        if path is not None:
+            await self.local_refresh(origin, force, force_series,
+                                     force_units, path, resources)
+            return
+
         parsed_url = URL.parse(charm_url)
         charm_name = parsed_url.name
 
@@ -788,7 +789,8 @@ async def refresh(
     upgrade_charm = refresh
 
     async def local_refresh(
-            self, channel=None, force=False, force_series=False, force_units=False,
+            self, charm_origin=None, force=False, force_series=False,
+            force_units=False,
             path=None, resources=None):
         """Refresh the charm for this application with a local charm.
 
@@ -831,7 +833,7 @@ async def local_refresh(
         # Update application
         await app_facade.SetCharm(
             application=self.entity_id,
-            channel=channel,
+            charm_origin=charm_origin,
             charm_url=charm_url,
             config_settings=None,
             config_settings_yaml=None,