Request the helper to perform a force update. Defaults to
'false'.
-'option cloning {'true'|'false'}::
+'option cloning' {'true'|'false'}::
Notify the helper this is a clone request (i.e. the current
repository is guaranteed empty).
-'option update-shallow {'true'|'false'}::
+'option update-shallow' {'true'|'false'}::
Allow to extend .git/shallow if the new refs require it.
-'option pushcert {'true'|'false'}::
+'option pushcert' {'true'|'false'}::
GPG sign pushes.
'option push-option <string>::