How to not ignore git submodules?

[hanool]

The eslint-config-flat-gitignore makes eslint to ignore my submodule.
There is a way not to ignore submodules in eslint-config-flat-gitignore, but there seems no way to configure it in withNuxt.
How do I override config of gitignore? Please help me configure it.

This will check my submodules with eslint

export default defineConfig([
  gitignore({ filesGitModules: [] }),
  eslintConfigPrettier,
  ...vue.configs['flat/base'],
  ...vuetify.configs['flat/base'],
])

This won't.

export default withNuxt([
  eslintConfigPrettier,
  ...vue.configs['flat/base'],
  ...vuetify.configs['flat/base'],
])
.override('gitignore', {
  ignores: gitignore().ignores.filter((item) => item !== 'mySub/**'), // I don't know how to override whole gitignore 
})

[hanool]

Actually, using remove instead of override did the trick.
This config works as intended, but it might be confusing at first glance. (adding gitignore and then removing it right away)

import gitignore from 'eslint-config-flat-gitignore'

export default withNuxt([
  gitignore({ filesGitModules: [] }), // adding customized `gitignore`
  eslintConfigPrettier,
  ...vuetify.configs['flat/base'],
])
.remove('gitignore') // removing `gitignore` created by `withNuxt`