Issue #19715: try the utime(..., None) approach again, now that it should be more precise under Windows

Lib/pathlib.py

@@ -6,7 +6,6 @@
 import posixpath
 import re
 import sys
-import time
 import weakref
 try:
     import threading
@@ -1076,9 +1075,8 @@ def touch(self, mode=0o666, exist_ok=True):
             # 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