How to recover a deleted folder in git?

Question

git

Somehow magically excluded the folder from the git. How can I get her back now? That is, there is a folder with files locally, but git does not want to see it at all and does not commit changes from it. It is not registered in gitignore, there is something else. All folders on the level above are also in the git and there are no problems with them. Help me please.