smd-pull(1) on Linux
The text ce5490bd30a7, as Debian 9 (Stretch) shipped it.
syncs the local mail dir letting the remote one untouched
Flags it lists
-
--dry-run -
--no-delete -
--show-tags -
--template-only -
--verbose -
-d -
-n -
-s -
-t -
-v