fix sub id for hub model

competitions/submissions.py

@@ -310,8 +310,8 @@ class Submissions:
             # )
             # create barebones submission runner space
             user_api = HfApi(token=user_token)
-            # submission_id is the sha of the submitted model repo
-            submission_id = user_api.model_info(repo_id=uploaded_file).sha
+            # submission_id is the sha of the submitted model repo + "__" + submission_id
+            submission_id = user_api.model_info(repo_id=uploaded_file).sha + "__" + submission_id
             competition_organizer = self.competition_id.split("/")[0]
             space_id = f"{competition_organizer}/comp-{submission_id}"
             api = HfApi(token=self.token)