Fix testing for origin

The previous code path was untested and not working

lib/git.py

@@ -267,7 +267,10 @@ class Git:
         )
 
     def push(self, force=False):
-        if "origin" not in self.git_run(["remote"]).stdout:
+        if "origin" not in self.git_run(
+            ["remote"],
+            stdout=subprocess.PIPE,
+        ).stdout.decode("utf-8"):
             logger.warning("Not pushing to remote because no 'origin' configured")
             return