One recipe for fetch a bigger repo, multiple recipes to build parts of it

Hello,

Do have a bigger repo with submodules. Before each submodule gets its
tag - so I did have mutliple recipes and need to fetch only parts.

Now there is just one(!) tag for the main repo. Anyhow it was a pain to
clone that repo and submodules multiple times.
So I think about one recipe for just fetching data and multiple recipes
that (depend on download-recipe)  work on the fetched data to compile parts?

Problem is, that I have a huge git repo (with submodules / gitsm) and
the download is via gitsm with branch and tag. Than the download folder
is some recipe-name/<tag>+gitAUTOINC+<git-hash> and other recipes can't
know that hash to access this folder.

What is a solution for this? I think about creating a link to the level
below - but that doesn't sound save or clever. What would your approach

Thanks,
Arno