Ways to quickly re-index a site in search engines, is there a solution?

Question

Yandex

There was a main site on one domain, its mirror was on the second, now two sites are indexed in the PS
At the moment, the domain that was the mirror has become a completely different site, well, it has ceased to be its mirror, how long to wait for the PS to re-index it? Or perhaps there are options to speed up this process?

Answer 1

robots.txt - check Host
.htaccess - 301 redirect
create and upload sitemap.xml files to search engines, etc.