yep you can just clone my fork. might be better to create your own fork of monome/teletype though and then set up my fork as a remote - this will allow you to get my changes but make pull requests against the main repository in the future (which will be the case once my grid2 branch is merged).
let’s say you create your own fork, so now you have alanza/teletype. you can clone it locally with:
git clone https://github.com/alanza/teletype.git --recursive
then add my fork as a remote:
git remote add scanner https://github.com/scanner-darkly/teletype.git
then fetch my branches, i usually just use git fetch -all so i don’t have to pull from each remote separately. you can now switch to my branch with:
git checkout scanner/grid2
(you might also need to update submodule with git submodule update). at this point you can create a local branch here and work from that.