How to Exclude Paths in Sitecore Content Serialization

{
  "$schema": "../../.sitecore/schemas/ModuleFile.schema.json",
  "namespace": "Project.sites",
  "references": [],
  "items": {
    "path": "sites",
    "includes": [
      {
        "name": "sites.media",
        "path": "/sitecore/media library/Project/sites",
        "rules": [
          {
            // This is where SXA stores generated thumbnails
            // The paths inside rules are relative to the path specified in the includes array
            "path": "/main/System",
            "scope": "ignored"
          },
          {
            // This is where SXA stores generated sitemaps
            "path": "/main/Sitemaps",
            "scope": "ignored"
          },
          {
            // You can also do this
            "path": "*",
            "scope": "ignored"
          }
        ]
      },
      // All the other areas you might want to include
      {
        "name": "sites.templates",
        "path": "/sitecore/templates/Project/sites"
      },
      {
        "name": "sites.templates.branches",
        "path": "/sitecore/templates/Branches/Project/sites"
      },
      {
        "name": "sites.modules",
        "path": "/sitecore/system/Settings/Project/sites"
      },
      {
        "name": "sites.renderings",
        "path": "/sitecore/layout/Renderings/Project/sites"
      },
      {
        "name": "sites.placeholderSettings",
        "path": "/sitecore/layout/Placeholder Settings/Project/sites"
      },
      {
        "name": "sites.layouts",
        "path": "/sitecore/layout/Layouts/Project/sites"
      }
    ]
  }
}