-USAGE="[--setup <command>] [--env-filter <command>]
- [--tree-filter <command>] [--index-filter <command>]
- [--parent-filter <command>] [--msg-filter <command>]
- [--commit-filter <command>] [--tag-name-filter <command>]
- [--subdirectory-filter <directory>] [--original <namespace>]
- [-d <directory>] [-f | --force]
+USAGE="[--setup <command>] [--subdirectory-filter <directory>]
+ [--env-filter <command>] [--tree-filter <command>]
+ [--index-filter <command>] [--parent-filter <command>]
+ [--msg-filter <command>] [--commit-filter <command>]
+ [--tag-name-filter <command>] [--prune-empty]
+ [--original <namespace>] [-d <directory>] [-f | --force]