How to work with submodules in a project if the development is in the submodule repositories?

Question

git

Moved several submodules to separate repositories in the project, added them `
git add submodule [email protected]`
`git submodule init`
`git submodule update`
the main project does not affect the code of submodules, it only pulls them up.
There are gitlab_ci pipelines for pushing submodules to repo, is it enough to set
```
cd $MAIN_PROJECT && git submodule update
``` in triggers
or something else is needed to update the main repo?
How to work with the main project locally? Is git pull && git submodule update sufficient before pushing changes (not affecting submodules), or should submodules be pulled and committed to the main repository?

Answer 1

Cloning a project with submodules
https://git-scm.com/book/ru/v1/Tools-Git-Submodules...