include source the app is being ugpraded to, like with fetching, in info

src/rebar_prv_install_deps.erl

@@ -370,7 +370,7 @@ maybe_upgrade(AppInfo, AppDir, Upgrade, State) ->
         true ->
             case rebar_fetch:needs_update(AppDir, Source, State) of
                 true ->
-                    ?INFO("Upgrading ~s", [rebar_app_info:name(AppInfo)]),
+                    ?INFO("Upgrading ~s (~p)", [rebar_app_info:name(AppInfo), rebar_app_info:source(AppInfo)]),
                     true = rebar_fetch:download_source(AppDir, Source, State);
                 false ->
                     case Upgrade of