There are a few criteria that you have to meet in order to contribute. Make sure that you comply to all of them! If you think that you could help us, you will in a first time need to set up your local fossil repository. On a terminal, type:
$>fossil clone https://kernel.clinl.org ./clinl.fossil
$>fossil open ./clinl.fossil
Then, compile a cross-compiler according to OSDevWiki. Set the makefile up as you wish, in order for it to work on your machine.
then, you can contribute. Edit the files just like you would edit them on a github repository. Once you are done,
$>make clean
$>fossil addremove
$>fossil commit -m "your MEANINGFUL commit message"
$>fossil push
Before pushing you might need to setup an account at kernel.clinl.org If you are facing any problems, contact us here!