diff --git a/swh/loader/git/from_disk.py b/swh/loader/git/from_disk.py
--- a/swh/loader/git/from_disk.py
+++ b/swh/loader/git/from_disk.py
@@ -33,12 +33,10 @@
 
     """
 
-    CONFIG_BASE_FILENAME = "loader/git-disk"
-
     visit_type = "git"
 
-    def __init__(self, url, visit_date=None, directory=None, config=None):
-        super().__init__(logging_class="swh.loader.git.Loader", config=config)
+    def __init__(self, url, visit_date=None, directory=None):
+        super().__init__(logging_class="swh.loader.git.Loader")
         self.origin_url = url
         self.visit_date = visit_date
         self.directory = directory
diff --git a/swh/loader/git/loader.py b/swh/loader/git/loader.py
--- a/swh/loader/git/loader.py
+++ b/swh/loader/git/loader.py
@@ -17,6 +17,7 @@
 from dulwich.object_store import ObjectStoreGraphWalker
 from dulwich.pack import PackData, PackInflater
 
+from swh.core.config import merge_configs
 from swh.loader.core.loader import DVCSLoader
 from swh.model import hashutil
 from swh.model.model import (
@@ -95,14 +96,13 @@
     pack_size: int
 
 
-class GitLoader(DVCSLoader):
-    """A bulk loader for a git repository"""
+DEFAULT_CONFIG: Dict[str, Any] = {
+    "pack_size_bytes": 4 * 1024 * 1024 * 1024,
+}
 
-    CONFIG_BASE_FILENAME = "loader/git"
 
-    ADDITIONAL_CONFIG = {
-        "pack_size_bytes": ("int", 4 * 1024 * 1024 * 1024),
-    }
+class GitLoader(DVCSLoader):
+    """A bulk loader for a git repository"""
 
     visit_type = "git"
 
@@ -112,7 +112,6 @@
         base_url: Optional[str] = None,
         ignore_history: bool = False,
         repo_representation: Type[RepoRepresentation] = RepoRepresentation,
-        config: Optional[Dict[str, Any]] = None,
     ):
         """Initialize the bulk updater.
 
@@ -122,10 +121,8 @@
             data.
 
         """
-        if config is None:
-            config = {}
-
-        super().__init__(logging_class="swh.loader.git.BulkLoader", config=config)
+        super().__init__(logging_class="swh.loader.git.BulkLoader")
+        self.config = merge_configs(DEFAULT_CONFIG, self.config)
         self.origin_url = url
         self.base_url = base_url
         self.ignore_history = ignore_history
diff --git a/swh/loader/git/tests/test_tasks.py b/swh/loader/git/tests/test_tasks.py
--- a/swh/loader/git/tests/test_tasks.py
+++ b/swh/loader/git/tests/test_tasks.py
@@ -1,10 +1,12 @@
-# Copyright (C) 2018-2019  The Software Heritage developers
+# Copyright (C) 2018-2020  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
-def test_git_loader(mocker, swh_scheduler_celery_app, swh_scheduler_celery_worker):
+def test_git_loader(
+    mocker, swh_config, swh_scheduler_celery_app, swh_scheduler_celery_worker
+):
     mock_loader = mocker.patch("swh.loader.git.loader.GitLoader.load")
     mock_loader.return_value = {"status": "eventful"}
 
@@ -20,7 +22,7 @@
 
 
 def test_git_loader_from_disk(
-    mocker, swh_scheduler_celery_app, swh_scheduler_celery_worker
+    mocker, swh_config, swh_scheduler_celery_app, swh_scheduler_celery_worker
 ):
     mock_loader = mocker.patch("swh.loader.git.from_disk.GitLoaderFromDisk.load")
     mock_loader.return_value = {"status": "uneventful"}
@@ -42,7 +44,7 @@
 
 
 def test_git_loader_from_archive(
-    mocker, swh_scheduler_celery_app, swh_scheduler_celery_worker
+    mocker, swh_config, swh_scheduler_celery_app, swh_scheduler_celery_worker
 ):
     mock_loader = mocker.patch("swh.loader.git.from_disk.GitLoaderFromArchive.load")