diff --git a/swh/lister/cgit/lister.py b/swh/lister/cgit/lister.py
index 8a92463..d0c35b5 100644
--- a/swh/lister/cgit/lister.py
+++ b/swh/lister/cgit/lister.py
@@ -1,133 +1,136 @@
 # Copyright (C) 2019-2021 The Software Heritage developers
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import logging
 from typing import Iterator, List, Optional
 from urllib.parse import urljoin, urlparse
 
 from bs4 import BeautifulSoup
 import requests
 
 from swh.lister import USER_AGENT
 from swh.lister.pattern import StatelessLister
 from swh.scheduler.interface import SchedulerInterface
 from swh.scheduler.model import ListedOrigin
 
 logger = logging.getLogger(__name__)
 
 Repositories = List[str]
 
 
 class CGitLister(StatelessLister[Repositories]):
     """Lister class for CGit repositories.
 
     This lister will retrieve the list of published git repositories by
     parsing the HTML page(s) of the index retrieved at `url`.
 
     For each found git repository, a query is made at the given url found
     in this index to gather published "Clone" URLs to be used as origin
     URL for that git repo.
 
     If several "Clone" urls are provided, prefer the http/https one, if
     any, otherwise fallback to the first one.
     """
 
     LISTER_NAME = "cgit"
 
-    def __init__(self, scheduler: SchedulerInterface, url=None, instance=None):
+    def __init__(
+        self, scheduler: SchedulerInterface, url: str, instance: Optional[str] = None
+    ):
         """Lister class for CGit repositories.
 
         Args:
             url (str): main URL of the CGit instance, i.e. url of the index
                 of published git repositories on this instance.
             instance (str): Name of cgit instance. Defaults to url's hostname
                 if unset.
 
         """
         if not instance:
             instance = urlparse(url).hostname
+        assert instance is not None  # Make mypy happy
 
         super().__init__(
             scheduler=scheduler, credentials=None, url=url, instance=instance,
         )
 
         self.session = requests.Session()
         self.session.headers.update(
             {"Accept": "application/html", "User-Agent": USER_AGENT}
         )
 
     def _get_and_parse(self, url: str) -> BeautifulSoup:
         """Get the given url and parse the retrieved HTML using BeautifulSoup"""
         response = self.session.get(url)
         response.raise_for_status()
         return BeautifulSoup(response.text, features="html.parser")
 
     def get_pages(self) -> Iterator[Repositories]:
         """Generate git 'project' URLs found on the current CGit server
 
         """
         next_page: Optional[str] = self.url
         while next_page:
             bs_idx = self._get_and_parse(next_page)
             page_results = []
 
             for tr in bs_idx.find("div", {"class": "content"}).find_all(
                 "tr", {"class": ""}
             ):
                 page_results.append(urljoin(self.url, tr.find("a")["href"]))
 
             yield page_results
 
             try:
                 pager = bs_idx.find("ul", {"class": "pager"})
 
                 current_page = pager.find("a", {"class": "current"})
                 if current_page:
                     next_page = current_page.parent.next_sibling.a["href"]
                     next_page = urljoin(self.url, next_page)
             except (AttributeError, KeyError):
                 # no pager, or no next page
                 next_page = None
 
     def get_origins_from_page(
         self, repositories: Repositories
     ) -> Iterator[ListedOrigin]:
         """Convert a page of cgit repositories into a list of ListedOrigins."""
         assert self.lister_obj.id is not None
 
         for repository_url in repositories:
             origin_url = self._get_origin_from_repository_url(repository_url)
             if not origin_url:
                 continue
 
             yield ListedOrigin(
                 lister_id=self.lister_obj.id,
                 url=origin_url,
                 visit_type="git",
                 last_update=None,
             )
 
     def _get_origin_from_repository_url(self, repository_url: str) -> Optional[str]:
         """Extract the git url from the repository page"""
         bs = self._get_and_parse(repository_url)
 
         # origin urls are listed on the repository page
         # TODO check if forcing https is better or not ?
         # <link rel='vcs-git' href='git://...' title='...'/>
         # <link rel='vcs-git' href='http://...' title='...'/>
         # <link rel='vcs-git' href='https://...' title='...'/>
         urls = [x["href"] for x in bs.find_all("a", {"rel": "vcs-git"})]
 
         if not urls:
             return None
 
         # look for the http/https url, if any, and use it as origin_url
         for url in urls:
             if urlparse(url).scheme in ("http", "https"):
                 origin_url = url
                 break
         else:
             # otherwise, choose the first one
             origin_url = urls[0]
         return origin_url
diff --git a/swh/lister/tests/test_cli.py b/swh/lister/tests/test_cli.py
index 1bccee9..0d674e6 100644
--- a/swh/lister/tests/test_cli.py
+++ b/swh/lister/tests/test_cli.py
@@ -1,42 +1,43 @@
 # 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
 
 import pytest
 
 from swh.lister.cli import SUPPORTED_LISTERS, get_lister
 
 from .test_utils import init_db
 
 lister_args = {
+    "cgit": {"url": "https://git.eclipse.org/c/",},
     "phabricator": {
         "instance": "softwareheritage",
         "url": "https://forge.softwareheritage.org/api/diffusion.repository.search",
         "api_token": "bogus",
     },
     "gitea": {"url": "https://try.gitea.io/api/v1/",},
 }
 
 
 def test_get_lister_wrong_input():
     """Unsupported lister should raise"""
     with pytest.raises(ValueError) as e:
         get_lister("unknown", "db-url")
 
     assert "Invalid lister" in str(e.value)
 
 
 def test_get_lister(swh_scheduler_config):
     """Instantiating a supported lister should be ok
 
     """
     db_url = init_db().url()
     for lister_name in SUPPORTED_LISTERS:
         lst = get_lister(
             lister_name,
             db_url,
             scheduler={"cls": "local", **swh_scheduler_config},
             **lister_args.get(lister_name, {}),
         )
         assert hasattr(lst, "run")