Update __init__.py

Author: Wulian233

Lib/zipfile/__init__.py

@@ -615,9 +615,9 @@ def _for_archive(self, archive: ZipFile) -> Self:
         Return self.
         """
         # gh-91279: Set the SOURCE_DATE_EPOCH to a specific timestamp
-        self.epoch = os.environ.get('SOURCE_DATE_EPOCH')
-        self.get_time = int(self.epoch) if self.epoch else time.time()
-        self.date_time = time.gmtime(self.get_time)[:6]
+        epoch = os.environ.get('SOURCE_DATE_EPOCH')
+        get_time = int(epoch) if epoch else time.time()
+        self.date_time = time.gmtime(get_time)[:6]
 
         self.compress_type = archive.compression
         self.compress_level = archive.compresslevel