Tom Bradford 
On Thursday 02/05/2019 at 10:00 the GitHub Enterprise instance will be taken down for maintenance to increase the disk capacity that contains user data as it is currently over 80% full.
The maintenance should take around 1 hour. During that time you will not be able to perform any git operations on the remote, nor will you be able to access the web interface.
Running Machine Learning workloads on Apocrita