The blocklist entries are synchronized locally from the Firefox Settings service.
https://firefox.settings.services.mozilla.com
In order to reduce the amount of data to be downloaded on first synchronization, a JSON dump from the records present on the remote server is shipped with the release.
Even though it is not a problem if the dumps are not up-to-date when shipped, here are the commands to update them:
SERVICE_URL="https://firefox.settings.services.mozilla.com/v1"
curl "$SERVICE_URL/buckets/blocklists/collections/certificates/records?" > services/blocklists/certificates.json
curl "$SERVICE_URL/buckets/blocklists/collections/gfx/records?" > services/blocklists/gfx.json
curl "$SERVICE_URL/buckets/blocklists/collections/plugins/records?" > services/blocklists/plugins.json
curl "$SERVICE_URL/buckets/blocklists/collections/addons/records?" > services/blocklists/addons.json
curl "$SERVICE_URL/buckets/pinning/collections/pins/records?" > services/blocklists/pins.json
- Setup a bot to update it regularly.