Kdevelop 4.2.3 and git plugin, commit button disabled

[Szymon Czynszak]

Hello,
I installed KDevelop 4.2.3, enabled git plugin and created new project
with git version control system. Repository was created in project
directory and that's fine. However when I right click on file in
project, then I choose option Git and I can do actions like add file
to repo, git pull, git push (and that's work too) etc., however some
options like commit, branches etc. are disabled. How to make them
work?
Best regards