'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) <n>]
[commit] [--] [<path>...]
'git submodule' [--quiet] foreach [--recursive] <command>
-'git submodule' [--quiet] sync [--] [<path>...]
+'git submodule' [--quiet] sync [--recursive] [--] [<path>...]
DESCRIPTION