directory - Git does not recognize new folder adds and its sub directories

Question

I have:

dirA/dir1
dirA/dir2

dirA has been added and I see it on the browser - when I click "dirA", I see dir1 and dir2, grayed out like I have explained below.
dir1 and dir2, both have more than one sub-directories and files.

git add dir1
git commit -m "..."

I get a message "On branch master, nothing to commit, working directory clean"

I am not sure why it wont go through and I see those as "grayed out" on the GitHub repo via browser.

Can someone help? I saw some similar threads on stackoverflow but they did not help me.

Answer 1

If you see on GitHub "grayed" folder, followed by a SHA1, those are submodules.

See "Git submodules in github repo"

That means they are nested git sub-repos which are referenced by the main repo.