Where does Git store the SHA1 of the commit for a submodule?

Question

I know that when you add a submodule to a git repository it tracks a particular commit of that submodule referenced by its sha1.

I\'m trying to find where this sha1

Answer 1

It is stored in Git's object database directly. The tree object for the directory where the submodule lives will have an entry for the submodule's commit (this is the so-called "gitlink").

Try doing git ls-tree master <path-to-directory-containing-submodule> (or just git ls-tree master if the submodule lives in the top-level directory).