diff --git a/swh/loader/git/converters.py b/swh/loader/git/converters.py
--- a/swh/loader/git/converters.py
+++ b/swh/loader/git/converters.py
@@ -74,7 +74,7 @@
         return Content(data=blob.as_raw_string(), status="visible", **hashes,)
 
 
-def dulwich_tree_to_directory(obj: ShaFile, log=None) -> Directory:
+def dulwich_tree_to_directory(obj: ShaFile) -> Directory:
     """Format a tree as a directory"""
     if obj.type_name != b"tree":
         raise ValueError("Argument is not a tree.")
@@ -122,7 +122,7 @@
     )
 
 
-def dulwich_commit_to_revision(obj: ShaFile, log=None) -> Revision:
+def dulwich_commit_to_revision(obj: ShaFile) -> Revision:
     if obj.type_name != b"commit":
         raise ValueError("Argument is not a commit.")
     commit = cast(Commit, obj)
@@ -180,7 +180,7 @@
 }
 
 
-def dulwich_tag_to_release(obj: ShaFile, log=None) -> Release:
+def dulwich_tag_to_release(obj: ShaFile) -> Release:
     if obj.type_name != b"tag":
         raise ValueError("Argument is not a tag.")
     tag = cast(Tag, obj)
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
@@ -2,9 +2,9 @@
 # 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
-
 from collections import defaultdict
 from datetime import datetime
+import logging
 import os
 import shutil
 from typing import Dict, Optional
@@ -28,6 +28,8 @@
 
 from . import converters, utils
 
+logger = logging.getLogger(__name__)
+
 
 def _check_tag(tag):
     """Copy-paste of dulwich.objects.Tag, minus the tagger and time checks,
@@ -174,7 +176,7 @@
             self._check(obj)
         except KeyError:
             _id = oid.decode("utf-8")
-            self.log.warn(
+            logger.warn(
                 "object %s not found, skipping" % _id,
                 extra={
                     "swh_type": "swh_loader_git_missing_object",
@@ -185,7 +187,7 @@
             return None
         except ObjectFormatException as e:
             id_ = oid.decode("utf-8")
-            self.log.warn(
+            logger.warn(
                 "object %s malformed (%s), skipping",
                 id_,
                 e.args[0],
@@ -198,7 +200,7 @@
             return None
         except EmptyFileException:
             id_ = oid.decode("utf-8")
-            self.log.warn(
+            logger.warn(
                 "object %s corrupted (empty file), skipping",
                 id_,
                 extra={
@@ -265,7 +267,7 @@
 
         for oid in missing_dirs:
             yield converters.dulwich_tree_to_directory(
-                self.repo[hashutil.hash_to_bytehex(oid)], log=self.log
+                self.repo[hashutil.hash_to_bytehex(oid)],
             )
 
     def has_revisions(self):
@@ -286,7 +288,7 @@
 
         for oid in missing_revs:
             yield converters.dulwich_commit_to_revision(
-                self.repo[hashutil.hash_to_bytehex(oid)], log=self.log
+                self.repo[hashutil.hash_to_bytehex(oid)],
             )
 
     def has_releases(self):
@@ -303,7 +305,7 @@
 
         for oid in missing_rels:
             yield converters.dulwich_tag_to_release(
-                self.repo[hashutil.hash_to_bytehex(oid)], log=self.log
+                self.repo[hashutil.hash_to_bytehex(oid)],
             )
 
     def get_snapshot(self):
@@ -335,7 +337,7 @@
                 branches[target] = None
 
         utils.warn_dangling_branches(
-            branches, dangling_branches, self.log, self.origin_url
+            branches, dangling_branches, logger, self.origin_url
         )
 
         self.snapshot = Snapshot(branches=branches)
@@ -428,7 +430,7 @@
             project_name, self.archive_path
         )
 
-        self.log.info(
+        logger.info(
             "Project %s - Uncompressing archive %s at %s",
             self.origin_url,
             os.path.basename(self.archive_path),
@@ -443,6 +445,6 @@
         """
         if self.temp_dir and os.path.exists(self.temp_dir):
             shutil.rmtree(self.temp_dir)
-        self.log.info(
+        logger.info(
             "Project %s - Done injecting %s" % (self.origin_url, self.repo_path)
         )
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
@@ -294,7 +294,7 @@
 
         self.ref_object_types = {sha1: None for sha1 in self.remote_refs.values()}
 
-        self.log.info(
+        logger.info(
             "Listed %d refs for repo %s",
             len(self.remote_refs),
             self.origin.url,
@@ -360,7 +360,7 @@
             if raw_obj.id in self.ref_object_types:
                 self.ref_object_types[raw_obj.id] = TargetType.DIRECTORY
 
-            yield converters.dulwich_tree_to_directory(raw_obj, log=self.log)
+            yield converters.dulwich_tree_to_directory(raw_obj)
 
     def get_revisions(self) -> Iterable[Revision]:
         """Format commits as swh revisions"""
@@ -368,7 +368,7 @@
             if raw_obj.id in self.ref_object_types:
                 self.ref_object_types[raw_obj.id] = TargetType.REVISION
 
-            yield converters.dulwich_commit_to_revision(raw_obj, log=self.log)
+            yield converters.dulwich_commit_to_revision(raw_obj)
 
     def get_releases(self) -> Iterable[Release]:
         """Retrieve all the release objects from the git repository"""
@@ -376,7 +376,7 @@
             if raw_obj.id in self.ref_object_types:
                 self.ref_object_types[raw_obj.id] = TargetType.RELEASE
 
-            yield converters.dulwich_tag_to_release(raw_obj, log=self.log)
+            yield converters.dulwich_tag_to_release(raw_obj)
 
     def get_snapshot(self) -> Snapshot:
         """Get the snapshot for the current visit.
@@ -458,7 +458,7 @@
                 )
 
         utils.warn_dangling_branches(
-            branches, dangling_branches, self.log, self.origin_url
+            branches, dangling_branches, logger, self.origin_url
         )
 
         self.snapshot = Snapshot(branches=branches)