The git-clone doc has the following synopsis

git clone [--template=<template-directory>]
      [-l] [-s] [--no-hardlinks] [-q] [-n] [--bare] [--mirror]
      [-o <name>] [-b <name>] [-u <upload-pack>] [--reference <repository>]
      [--dissociate] [--separate-git-dir <git-dir>]
      [--depth <depth>] single-branch] [--no-tags]
      [--recurse-submodules[=<pathspec>]] shallow-submodules]
      remote-submodules] [--jobs <n>] [--sparse] reject-shallow]
      [--filter=<filter-spec>] [--also-filter-submodules]] [--] <repository>
      [<directory>]

I see several options w/ missing [s / unpaired ]s. They are

• single-branch]
• shallow-submodules]
• remote-submodules]
• reject-shallow]
• [--also-filter-submodules]]

Is foo] a special syntax? Or are these options missing [s?