Help!!!Type confused!

[lvjiaxuan]

octokit.rest.repos.updateInformationAboutPagesSite:

octokit.rest.repos.updateInformationAboutPagesSite({
  owner: context.repo.owner,
  repo: context.repo.repo,
  source: { // error error error error error error error error error
    branch: 'branch-foo',
    path: '/',
  },
})

Take a look at the type.d.ts:

{
  // ...
  source?: Partial<'gh-pages' | 'master' | 'master /docs'> &
    Partial<{
      /** The repository branch used to publish your site's source files. */
      branch: string
      /** The repository directory that includes the source files for the Pages site. Allowed paths are `/` or `/docs`. */
      path: '/' | '/docs'
    }>
}

How can I use the source type correctly?