SYNOPSIS
--------
[verse]
-'git submodule' [--quiet] add [-b branch] [-f|--force] [--name <name>]
+'git submodule' [--quiet] add [-b <branch>] [-f|--force] [--name <name>]
[--reference <repository>] [--] <repository> [<path>]
'git submodule' [--quiet] status [--cached] [--recursive] [--] [<path>...]
'git submodule' [--quiet] init [--] [<path>...]
-'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase]
+'git submodule' [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase]
[--reference <repository>] [--merge] [--recursive] [--] [<path>...]
'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) <n>]
[commit] [--] [<path>...]
initialized, `+` if the currently checked out submodule commit
does not match the SHA-1 found in the index of the containing
repository and `U` if the submodule has merge conflicts.
- This command is the default command for 'git submodule'.
+
If `--recursive` is specified, this command will recurse into nested
submodules, and show their status as well.