$ cue help mod get
WARNING: THIS COMMAND IS EXPERIMENTAL.

Get updates module dependencies, fetching new dependencies if
needed and changing versions to specified versions. It can downgrade
a version only when a higher version is not required by other
dependencies.

Each argument specifies a module path and optionally a version
suffix. If there is no version suffix, the latest non-prerelease version
of the module will be requested; alternatively a suffix of "@latest"
also specifies the latest version.

A version suffix can contain a major version only (@v1), a major and minor
version (@v1.2) or full version (@v1.2.3). If minor or patch version is omitted, the
latest non-prerelease version will be chosen that has the same major
and minor versions.

If the desired version cannot be chosen (for example because a
dependency already uses a later version than the desired version),
this command will fail.

See "cue help environment" for details on how $CUE_REGISTRY is used to
determine the modules registry.

Note: you must enable the modules experiment with:
	export CUE_EXPERIMENT=modules
for this command to work.

Usage:
  cue mod get [flags]

Global Flags:
  -E, --all-errors   print all available errors
  -i, --ignore       proceed in the presence of errors
  -s, --simplify     simplify output
      --strict       report errors for lossy mappings
      --trace        trace computation
  -v, --verbose      print information about progress