How to include URLs from Secondary Project in Main Site's sitemap??

[sohang3112]

I have a main site (sohang3112.github.io) using Jekyll, with a sitemap. There's a secondary project site hosted in a different repo but under the same ___domain (sohang3112.github.io/resume/).

How can I include the URLs from the secondary project site in the sitemap of the main site??

[nisbet-hubbard]

If you just want specific search engines to discover both sitemaps, you can submit them in their respective webmaster consoles.

If you also want other crawlers to be aware of them, you can create a robots.txt in the / of your main repo and add a line in it for each sitemap.