Currently, search for pandoc beamer code listing grayscale shows a GitHub repository in the result, with seemingly related issues below it:
However, these two issues are actually in two different repositories than the "alexeygumirov/pandoc-beamer-how-to" repository from the top-level result: Wandmalfarbe/pandoc-latex-template and jgm/pandoc/.
I understand this is the "normal" behavior, i.e. that search results are grouped by domain. It might make sense to consider an exception for GitHub though, where grouping by repositories (with related issues and PRs below) might make more sense.
A user would be able to find issues related to a specific GitHub repository at a glance, instead of having to click onto the issue in the search results.