we copy

hogvm/python/execute.py

@@ -1,6 +1,7 @@
 from datetime import timedelta
 import re
 import time
+from copy import deepcopy
 from typing import Any, Optional, TYPE_CHECKING
 from collections.abc import Callable
 
@@ -247,7 +248,7 @@ def capture_upvalue(index) -> dict:
             case Operation.GET_GLOBAL:
                 chain = [pop_stack() for _ in range(next_token())]
                 if globals and chain[0] in globals:
-                    push_stack(get_nested_value(globals, chain, True))
+                    push_stack(deepcopy(get_nested_value(globals, chain, True)))
                 elif functions and chain[0] in functions:
                     push_stack(
                         new_hog_closure(