diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,5 +1,5 @@
 swh.core >= 0.0.7
-swh.loader.core >= 0.3.2
+swh.loader.core >= 0.3.9
 swh.model >= 0.3.0
 swh.scheduler >= 0.0.39
 swh.storage >= 0.7.0
diff --git a/swh/loader/git/tests/__init__.py b/swh/loader/git/tests/__init__.py
--- a/swh/loader/git/tests/__init__.py
+++ b/swh/loader/git/tests/__init__.py
@@ -2,22 +2,3 @@
 # 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
-
-import os
-import subprocess
-
-from typing import Optional
-
-
-def prepare_repository_from_archive(
-    archive_path: str,
-    filename: Optional[str] = None,
-    tmp_path: str = "/tmp",
-    uncompress_archive: bool = True,
-) -> str:
-    if uncompress_archive:
-        # uncompress folder/repositories/dump for the loader to ingest
-        subprocess.check_output(["tar", "xf", archive_path, "-C", tmp_path])
-    # build the origin url (or some derivative form)
-    _fname = filename if filename else os.path.basename(archive_path)
-    return f"file://{tmp_path}/{_fname}"
diff --git a/swh/loader/git/tests/test_from_disk.py b/swh/loader/git/tests/test_from_disk.py
--- a/swh/loader/git/tests/test_from_disk.py
+++ b/swh/loader/git/tests/test_from_disk.py
@@ -14,12 +14,14 @@
 
 from swh.model.model import Snapshot, SnapshotBranch, TargetType
 from swh.model.hashutil import hash_to_bytes
-from swh.loader.tests.common import assert_last_visit_matches
-from swh.loader.git.from_disk import GitLoaderFromDisk
-from swh.loader.git.from_disk import GitLoaderFromArchive
-from swh.loader.package.tests.common import check_snapshot, get_stats
-
-from swh.loader.git.tests import prepare_repository_from_archive
+from swh.loader.git.from_disk import GitLoaderFromDisk, GitLoaderFromArchive
+
+from swh.loader.tests import (
+    assert_last_visit_matches,
+    check_snapshot,
+    get_stats,
+    prepare_repository_from_archive,
+)
 
 
 SNAPSHOT_ID = "a23699280a82a043f8c0994cf1631b568f716f95"
diff --git a/swh/loader/git/tests/test_loader.py b/swh/loader/git/tests/test_loader.py
--- a/swh/loader/git/tests/test_loader.py
+++ b/swh/loader/git/tests/test_loader.py
@@ -13,7 +13,7 @@
 from swh.loader.git.loader import GitLoader
 from swh.loader.git.tests.test_from_disk import FullGitLoaderTests
 
-from swh.loader.git.tests import prepare_repository_from_archive
+from swh.loader.tests import prepare_repository_from_archive
 
 
 class GitLoaderTest(TestCase, FullGitLoaderTests):