diff --git a/openhands-sdk/openhands/sdk/git/utils.py b/openhands-sdk/openhands/sdk/git/utils.py
index e16d4a2605..2056015c62 100644
--- a/openhands-sdk/openhands/sdk/git/utils.py
+++ b/openhands-sdk/openhands/sdk/git/utils.py
@@ -309,6 +309,8 @@ def is_git_url(source: str) -> bool:
         True
         >>> is_git_url("git@github.com:owner/repo.git")
         True
+        >>> is_git_url("ssh://git@github.com/owner/repo.git")
+        True
         >>> is_git_url("/local/path")
         False
     """
@@ -316,6 +318,10 @@ def is_git_url(source: str) -> bool:
     if source.startswith(("https://", "http://")):
         return True
 
+    # SSH URL with explicit scheme: ssh://git@host[:port]/path
+    if source.startswith("ssh://"):
+        return True
+
     # SSH format: git@host:path or user@host:path
     if re.match(r"^[\w.-]+@[\w.-]+:", source):
         return True
diff --git a/tests/sdk/extensions/test_fetch.py b/tests/sdk/extensions/test_fetch.py
index dcf2b41994..70e11f168e 100644
--- a/tests/sdk/extensions/test_fetch.py
+++ b/tests/sdk/extensions/test_fetch.py
@@ -128,6 +128,19 @@ def test_parse_ssh_with_custom_user():
     assert url == ssh_url
 
 
+def test_parse_ssh_scheme_url():
+    """`ssh://` scheme URLs (incl. an explicit port) are recognized as git URLs.
+
+    Regression test: previously `is_git_url()` did not recognize the `ssh://`
+    scheme, so these dropped through to "Unable to parse extension source"
+    instead of being treated as a git source.
+    """
+    ssh_url = "ssh://git@bitbucket.example.com:7999/team/repo.git"
+    source_type, url = parse_extension_source(ssh_url)
+    assert source_type == SourceType.GIT
+    assert url == ssh_url
+
+
 def test_parse_relative_path_with_slash():
     source_type, url = parse_extension_source("extensions/my-ext")
     assert source_type == SourceType.LOCAL