diff --git a/docker/tests/test_git_loader.py b/docker/tests/test_git_loader.py
index 78fdee0..62303f7 100644
--- a/docker/tests/test_git_loader.py
+++ b/docker/tests/test_git_loader.py
@@ -1,62 +1,62 @@
 # Copyright (C) 2019-2020  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
 
 from urllib.parse import quote_plus
 
 from .conftest import apiget
 
 
 def test_git_loader(scheduler_host, git_origin):
     url = git_origin
 
     print(f'Retrieve references available at {url}')
     gitrefs = scheduler_host.check_output(f'git ls-remote {url}')
     gitrefs = [x.split() for x in gitrefs.splitlines()]
 
     print(f'Look for origin {url}')
     # use quote_plus to prevent urljoin from messing with the 'http://' part of
     # the url
     origin = apiget(f'origin/{quote_plus(url)}/get')
     assert origin['url'] == url
 
     visit = apiget(f'origin/{quote_plus(url)}/visit/latest')
     assert visit['status'] == 'full'
 
-    print(f'Check every identified git ref has been loaded')
+    print('Check every identified git ref has been loaded')
     snapshot = apiget(f'snapshot/{visit["snapshot"]}')
 
     print(f'snapshot has {len(snapshot["branches"])} branches')
     branches = snapshot["branches"]
 
     # check every branch reported by git ls-remote is present in the snapshot
     for rev, branch_name in gitrefs:
         # for tags, only check for final revision id
         if branch_name.startswith('refs/tags/') \
            and not branch_name.endswith('^{}'):
             continue
         rev_desc = apiget(f'revision/{rev}')
         assert rev_desc['type'] == 'git'
 
     tag_revision = {}
     tag_release = {}
     for rev, tag in gitrefs:
         if tag.startswith('refs/tags/'):
             if tag.endswith('^{}'):
                 tag_revision[tag[:-3]] = rev
             else:
                 tag_release[tag] = rev
 
     for tag, revision in tag_revision.items():
         # check that every release tag listed in the snapshot is known by the
         # archive and consistant
         release_id = tag_release[tag]
         release = apiget(f'release/{release_id}')
         assert release['id'] == release_id
         assert release['target_type'] == 'revision'
         assert release['target'] == revision
         # and compare this with what git ls-remote reported
         tag_desc = branches[tag]
         assert tag_desc['target_type'] == 'release'
         assert tag_desc['target'] == release_id