diff --git a/git/objects/commit.py b/git/objects/commit.py
@@ -269,7 +269,7 @@ def _iter_from_process_or_stream(cls, repo, proc_or_stream):
            # END handle extra info

            assert len(hexsha) == 40, "Invalid line: %s" % hexsha
-            yield Commit(repo, hex_to_bin(hexsha))
        # END for each line in stream
        # TODO: Review this - it seems process handling got a bit out of control
        # due to many developers trying to fix the open file handles issue

diff --git a/test/test_commit.py b/test/test_commit.py
@@ -199,6 +199,13 @@ def test_iteration(self):
        less_ltd_commits = list(Commit.iter_items(self.rorepo, 'master', paths=('CHANGES', 'AUTHORS')))
        assert len(ltd_commits) < len(less_ltd_commits)

    def test_iter_items(self):
        # pretty not allowed
        self.assertRaises(ValueError, Commit.iter_items, self.rorepo, 'master', pretty="raw")