I use github. Suppose there are a number of repositories that are linked by a common theme, and, in order not to clutter up the general profile view, it occurred to me to throw them into one repository. Roughly speaking, to look something like: there is a repository and there are others in it:

-main repo --1st repo --2nd repo --3rd repo --readme.md 

I did not find any settings, I found only a transfer to another github.

    1 answer 1

    I did this:

    In the repository №1, all the contents were transferred to the subfolder / Project1 /

    In the repository №2, all the contents were transferred to the subfolder / Project2 /

    In the repository №3 all the contents transferred to the subfolder / Project3 /

    Further, in the local copy of repository No. 1, in turn, I added the remaining storages as a remote and made a pull. As a result, I received a project that had folders in its root:

    / Project1 /

    / Project2 /

    / Project3 /

    push sent the entire history of all projects to the common repository.

    After that, repositories 2 and 3 were deleted as unnecessary.