Update Python/import.c

Co-authored-by: T. Wouters <thomas@python.org>

Author: pablogsal

Python/import.c

@@ -3882,11 +3882,7 @@ _PyImport_LoadLazyImportTstate(PyThreadState *tstate, PyObject *lazy_import)
     assert(lazy_import != NULL);
     assert(PyLazyImport_CheckExact(lazy_import));
 
-    // Keep a strong reference to the lazy import object. During
-    // _PyImport_AcquireLock() below the GIL may be released, allowing
-    // another thread to resolve this same lazy import and drop all
-    // external references (from the globals dict and stack). The extra
-    // INCREF ensures the object stays alive while we work with it.
+    // lazy_import may be a borrowed ref. Keep it alive while we acquire the import lock.
     Py_INCREF(lazy_import);
 
     PyLazyImportObject *lz = (PyLazyImportObject *)lazy_import;