cd ~/Downloads/brigadier-master/
LT-rMBP18:brigadier-master $ ls -lg 
total 88
-rwxr-xr-x@ 1 staff   2694 Aug 29 19:58 CHANGELIST
-rwxr-xr-x@ 1 staff   1086 Aug 29 19:58 LICENSE.md
-rwxr-xr-x@ 1 staff  11056 Aug 29 19:58 README.md
-rwxr-xr-x@ 1 staff      6 Aug 29 19:58 VERSION
-rwxr-xr-x@ 1 staff  15448 Aug 29 19:58 brigadier
-rwxr-xr-x@ 1 staff   2214 Aug 29 19:58 build_windows_exe.py
drwxr-xr-x@ 5 staff    160 Aug 29 19:58 msi-transform
drwxr-xr-x@ 3 staff     96 Aug 29 19:58 plist-example
drwxr-xr-x  3 staff     96 Oct 10 08:38 testDownload
LT-rMBP18:brigadier-master $ ./brigadier -help 
Usage: brigadier [options]

Options:
  -h, --help            show this help message and exit
  -m MODEL, --model=MODEL
                        System model identifier to use (otherwise this
                        machine's model is used). This can be specified
                        multiple times to download multiple models in a single
                        run.
  -i, --install         After the installer is downloaded, perform the install
                        automatically. Can be used on Windows only.
  -o OUTPUT_DIR, --output-dir=OUTPUT_DIR
                        Base path where the installer files will be extracted
                        into a folder named after the product, ie.
                        'BootCamp-041-1234'. Uses the current directory if
                        this option is omitted.
  -k, --keep-files      Keep the files that were downloaded/extracted. Useful
                        only with the '--install' option on Windows.
  -p PRODUCT_ID, --product-id=PRODUCT_ID
                        Specify an exact product ID to download (ie.
                        '031-0787'), currently useful only for cases where a
                        model has multiple BootCamp ESDs available and is not
                        downloading the desired version according to the post
                        date.
LT-rMBP18:brigadier-master $ mkdir testDownload
LT-rMBP18:brigadier-master $ ./brigadier -o testDownload
Using Mac model: MacBookPro15,2.

Model supported in package distribution file at http://swcdn.apple.com/content/downloads/24/46/041-91737-A_KOBGOTCIEZ/0b9gnebg3ivdfsd79simxpr60vvx9sy31k/041-91737.English.dist.

Distribution 041-91737 supports the following models: MacBookPro15,1, MacBookPro15,2.

Making directory testDownload/BootCamp-041-91737..

Fetching Boot Camp product at URL http://swcdn.apple.com/content/downloads/24/46/041-91737-A_KOBGOTCIEZ/0b9gnebg3ivdfsd79simxpr60vvx9sy31k/BootCampESD.pkg.

100.0% 998146048 / 998143387 bytes
Expanding flat package...

Extracting Payload...

Extracted to testDownload/BootCamp-041-91737/WindowsSupport.dmg.

Done.

LT-rMBP18:brigadier-master $ ls -lg testDownload/BootCamp-041-91737
total 1967872
-rw-r--r--  1 staff  1000740515 Aug  9  2018 WindowsSupport.dmg