How to clone sub-directory inside another sub-directory?

Have one repository in Gitlab like this folder tree:

somerepo
  ├─ innerrepo1
  └─ innerrepo2

somerepo is the main repository. The others are sub-directories. Is it possible to clone innerrepo1 inside innerrepo2? If yes, how to do it?

I have no idea how to get it. The hidden .git folder is inside somerepo.

Solution

Try to add it as a submodule:

git submodule [--quiet] add [<options>] [--] <repository> [<path>]

Example (using master branch and dummy GitHub links):

git submodule add master --name innerrepo1 https://github.com/bla_bla_bla/innerrepo1.git innerrepo2/innerrepo1

This will add the following entry in the file: "/somerepo/.gitmodules":

[submodule "innerrepo1"]
    path = innerrepo2/innerrepo1
    url = https://github.com/bla_bla_bla/innerrepo1.git