sources before building, and you really don’t wanna do that with multiple gigabytes of data.
$ ./generate.py -h       
usage: generate.py [-h] [--commit] [--push] [--push-args [PUSH_ARGS ...]]
options:
  -h, --help            show this help message and exit
  --commit              Commit each model AUR repo.
  --push                Also push to each model AUR repo.
  --push-args [PUSH_ARGS ...]
                        Extra arguments when pushing to each model AUR repo.Just python generate.py. This will overwrite the individual PKGBUILD files and commit them. You can use –push to push to the aur repos.
Then just go through the models/ subdirectory and build models that you want – or just install from AUR.