Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - https://web.archive.org/web/20210722202450/https://docs.github.com/cn/github/setting-up-and-managing-your-github-user-account/managing-user-account-settings/merging-multiple-user-accounts