diff --git a/swh/lister/packagist/lister.py b/swh/lister/packagist/lister.py
--- a/swh/lister/packagist/lister.py
+++ b/swh/lister/packagist/lister.py
@@ -11,6 +11,7 @@
 import iso8601
 import requests
 
+from swh.core.github.utils import GitHubSession
 from swh.scheduler.interface import SchedulerInterface
 from swh.scheduler.model import ListedOrigin
 
@@ -63,6 +64,10 @@
 
         self.session.headers.update({"Accept": "application/json"})
         self.listing_date = datetime.now().astimezone(tz=timezone.utc)
+        self.github_session = GitHubSession(
+            credentials=self.credentials,
+            user_agent=str(self.session.headers["User-Agent"]),
+        )
 
     def state_from_dict(self, d: Dict[str, Any]) -> PackagistListerState:
         last_listing_date = d.get("last_listing_date")
diff --git a/swh/lister/packagist/tests/data/maxmilhas_specification-pattern.json b/swh/lister/packagist/tests/data/maxmilhas_specification-pattern.json
new file mode 100644
--- /dev/null
+++ b/swh/lister/packagist/tests/data/maxmilhas_specification-pattern.json
@@ -0,0 +1,85 @@
+{
+  "packages": {
+    "maxmilhas/specification-pattern": {
+      "1.0.0": {
+        "name": "maxmilhas/specification-pattern",
+        "description": "Implementation of the Specification Design Pettern in PHP",
+        "keywords": [],
+        "homepage": "",
+        "version": "1.0.0",
+        "version_normalized": "1.0.0.0",
+        "license": [
+          "MIT"
+        ],
+        "authors": [
+          {
+            "name": "MaxMilhas",
+            "email": "ti@maxmilhas.com.br"
+          }
+        ],
+        "source": {
+          "url": "https://github.com/maxmilhas/SpecificationPatternPHP.git",
+          "type": "git",
+          "reference": "017aac2a7b245983e1863a3e9db65d1ad010de9b"
+        },
+        "dist": {
+          "url": "https://api.github.com/repos/maxmilhas/SpecificationPatternPHP/zipball/017aac2a7b245983e1863a3e9db65d1ad010de9b",
+          "type": "zip",
+          "shasum": "",
+          "reference": "017aac2a7b245983e1863a3e9db65d1ad010de9b"
+        },
+        "type": "library",
+        "time": "2015-07-03T21:01:33+00:00",
+        "autoload": {
+          "psr-4": {
+            "MaxMilhas\\DesignPatterns\\": [
+              "src/",
+              "tests/src/"
+            ]
+          }
+        },
+        "uid": 452100
+      },
+      "dev-master": {
+        "name": "maxmilhas/specification-pattern",
+        "description": "Implementation of the Specification Design Pettern in PHP",
+        "keywords": [],
+        "homepage": "",
+        "version": "dev-master",
+        "version_normalized": "9999999-dev",
+        "license": [
+          "MIT"
+        ],
+        "authors": [
+          {
+            "name": "MaxMilhas",
+            "email": "ti@maxmilhas.com.br"
+          }
+        ],
+        "source": {
+          "url": "https://github.com/maxmilhas-admin/SpecificationPatternPHP.git",
+          "type": "git",
+          "reference": "9f22ef2ebff0bba687eb3e7dad6873ac8d3ee246"
+        },
+        "dist": {
+          "url": "https://api.github.com/repos/maxmilhas-admin/SpecificationPatternPHP/zipball/9f22ef2ebff0bba687eb3e7dad6873ac8d3ee246",
+          "type": "zip",
+          "shasum": "",
+          "reference": "9f22ef2ebff0bba687eb3e7dad6873ac8d3ee246"
+        },
+        "type": "library",
+        "time": "2015-08-04T14:20:59+00:00",
+        "autoload": {
+          "psr-4": {
+            "MaxMilhas\\DesignPatterns\\": [
+              "src/",
+              "tests/src/"
+            ]
+          }
+        },
+        "default-branch": true,
+        "uid": 4063205
+      }
+    }
+  }
+}
diff --git a/swh/lister/packagist/tests/test_lister.py b/swh/lister/packagist/tests/test_lister.py
--- a/swh/lister/packagist/tests/test_lister.py
+++ b/swh/lister/packagist/tests/test_lister.py
@@ -150,6 +150,38 @@
     assert stats.origins == 0
 
 
+def test_packagist_lister_package_normalize_github_origin(
+    swh_scheduler, requests_mock, datadir
+):
+    package_name = "maxmilhas/specification-pattern"
+    lister = PackagistLister(scheduler=swh_scheduler)
+    requests_mock.get(
+        lister.PACKAGIST_PACKAGES_LIST_URL, json={"packageNames": [package_name]}
+    )
+    requests_mock.get(
+        f"{lister.PACKAGIST_REPO_BASE_URL}/{package_name}.json",
+        additional_matcher=_request_without_if_modified_since,
+        json=_package_metadata(datadir, package_name),
+    )
+
+    stats = lister.run()
+
+    assert stats.pages == 1
+    assert stats.origins == 1
+
+    expected_origins = {
+        (
+            "https://github.com/maxmilhas-admin/SpecificationPatternPHP.git",
+            "git",
+            datetime.datetime.fromisoformat("2015-08-04T14:20:59+00:00"),
+        ),
+    }
+    assert expected_origins == {
+        (o.url, o.visit_type, o.last_update)
+        for o in swh_scheduler.get_listed_origins(lister.lister_obj.id).results
+    }
+
+
 def test_lister_from_configfile(swh_scheduler_config, mocker):
     load_from_envvar = mocker.patch("swh.lister.pattern.load_from_envvar")
     load_from_envvar.return_value = {