Commit messages from Submodules to Jenkins Change Log
After consulting this cheatsheet, I think that you are looking for the subject. If I apply:

git log --pretty="%s"


to one of my git repositories, the following is returned:

learning pointers in golang
receiver struct in golang
embedded structs in golang
multiple spanish words


In conclusion, I think you should include %s to get the git messages or basically the commit subjects.