feat: set reset target

joint_teapot/app.py

@@ -568,7 +568,10 @@ def joj3_all(
         git_push_ok = False
         while not git_push_ok:
             repo_path = tea.pot.git.repo_clean_and_checkout(
-                repo_name, "grading", clean_git_lock=True
+                repo_name,
+                "grading",
+                clean_git_lock=True,
+                reset_target="origin/grading",
             )
             repo: Repo = tea.pot.git.get_repo(repo_name)
             if "grading" not in repo.remote().refs:

joint_teapot/workers/git.py

@@ -75,8 +75,10 @@ class Git:
         self,
         repo_name: str,
         checkout_dest: str,
+        *,
         auto_retry: bool = True,
         clean_git_lock: bool = False,
+        reset_target: str = "origin/master",
     ) -> str:
         repo_dir = os.path.join(self.repos_dir, repo_name)
         repo = self.get_repo(repo_name)
@@ -92,7 +94,7 @@ class Git:
                         if os.path.exists(lock_path):
                             os.remove(lock_path)
                 repo.git.fetch("--tags", "--all", "-f")
-                repo.git.reset("--hard", "origin/master")
+                repo.git.reset("--hard", reset_target)
                 repo.git.clean("-d", "-f", "-x")
                 repo.git.checkout(checkout_dest)
                 retry_interval = 0