Add revision to trainer push_to_hub (#33482)

* add revision to trainer push_to_hub

* apply suggestions

* add test for revision

* apply ruff format

* reorganize imports

* change test trainer path

tests/trainer/test_trainer.py

@@ -31,7 +31,7 @@ from typing import Dict, List
 from unittest.mock import Mock, patch
 
 import numpy as np
-from huggingface_hub import HfFolder, ModelCard, delete_repo, list_repo_commits, list_repo_files
+from huggingface_hub import HfFolder, ModelCard, create_branch, delete_repo, list_repo_commits, list_repo_files
 from parameterized import parameterized
 from requests.exceptions import HTTPError
 
@@ -3933,6 +3933,25 @@ class TrainerIntegrationWithHubTester(unittest.TestCase):
             model_card = ModelCard.load(repo_name)
             self.assertTrue("test-trainer-tags" in model_card.data.tags)
 
+    def test_push_to_hub_with_revision(self):
+        # Checks if `trainer.push_to_hub()` works correctly by adding revision
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            trainer = get_regression_trainer(
+                output_dir=os.path.join(tmp_dir, "test-trainer-revision"),
+                push_to_hub=True,
+                hub_token=self._token,
+            )
+            branch = "v1.0"
+            create_branch(repo_id=trainer.hub_model_id, branch=branch, token=self._token, exist_ok=True)
+            url = trainer.push_to_hub(revision=branch)
+
+            # Extract branch from the url
+            re_search = re.search(r"tree/([^/]+)/", url)
+            self.assertIsNotNone(re_search)
+
+            branch_name = re_search.groups()[0]
+            self.assertEqual(branch_name, branch)
+
 
 @require_torch
 @require_optuna