If you are a developer and would like to receive GIT access, you will need to first be using the Experiment plan or higher as per our pricing page here: https://www.thrinacia.com/atlas/pricing
Once you are using the appropriate plan, you can either create a support ticket in nexus.thrinacia.com or send an email to support@thrinacia.com providing your public SSH key in OpenSSH format. We can then grant you access to your GIT repository so you make changes to the site via GIT.
Please note, if you are making any updates to the front end source code and you do not want your customizations to be overwritten by our automatic updates, you will need to request to be excluded from the automatic updates.