How to install the latest Libretime on Ubuntu server 20.04

Hi all,
I need help to install libretime on ubuntu 20.04 .

$ cd /opt
$ sudo git clone GitHub - libretime/libretime: LibreTime: Radio Broadcast & Automation Platform
$ cd /opt/libretime
$ git log
sudo git checkout 6d5c58fbcb026e0d4b9b97cabb118f6aefa76f42

those are the command i used to install it. but it is not working now so I think i need new commit id or something.
any advice?