Issue #19715: try the utime(..., None) approach again, now that it should be more precise under Windows
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index 06cbae5..e73eca7 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -6,7 +6,6 @@
 import posixpath
 import re
 import sys
-import time
 import weakref
 try:
     import threading
@@ -1076,9 +1075,8 @@
             # First try to bump modification time
             # Implementation note: GNU touch uses the UTIME_NOW option of
             # the utimensat() / futimens() functions.
-            t = time.time()
             try:
-                self._accessor.utime(self, (t, t))
+                self._accessor.utime(self, None)
             except OSError:
                 # Avoid exception chaining
                 pass