diff --git a/swh/core/github/tests/test_github_utils.py b/swh/core/github/tests/test_github_utils.py
--- a/swh/core/github/tests/test_github_utils.py
+++ b/swh/core/github/tests/test_github_utils.py
@@ -18,9 +18,9 @@
 KNOWN_GH_REPO = "https://github.com/user/repo"
 
 
-def _url_github_html(user_repo: str, protocol: str = "https") -> str:
+def _url_github_html(user_repo: str, protocol: str = "https://") -> str:
     """Given the user repo, returns the expected github html url."""
-    return f"{protocol}://github.com/{user_repo}"
+    return f"{protocol}github.com/{user_repo}"
 
 
 @pytest.mark.parametrize(
@@ -39,7 +39,16 @@
     user_repo, expected_url, requests_mock, github_credentials
 ):
     """It should return a canonical github origin when it exists, None otherwise"""
-    for protocol in ["https", "git", "http"]:
+    for protocol in [
+        "http://",
+        "https://",
+        "git://",
+        "ssh://",
+        "//",
+        "git@",
+        "ssh://git@",
+        "https://${env.GITHUB_TOKEN_USR}:${env.GITHUB_TOKEN_PSW}@",
+    ]:
         html_input_url = _url_github_html(user_repo, protocol=protocol)
         html_url = _url_github_html(user_repo)
         api_url = _url_github_api(_sanitize_github_url(user_repo))
diff --git a/swh/core/github/utils.py b/swh/core/github/utils.py
--- a/swh/core/github/utils.py
+++ b/swh/core/github/utils.py
@@ -19,7 +19,9 @@
     wait_exponential,
 )
 
-GITHUB_PATTERN = re.compile(r"(git|https?)://github.com/(?P<user_repo>.*)")
+GITHUB_PATTERN = re.compile(
+    r"(//|git://|git@|git//|https?://|ssh://|.*@)github.com[/:](?P<user_repo>.*)"
+)
 
 
 logger = logging.getLogger(__name__)