GitLab will continue to be upgraded from 11.4.5-ce.0 on November 25th 2019 at 4.00pm (AEDT) to 5.00pm (AEDT) due to Critical Security Patch Availability. During the update, GitLab and Mattermost services will not be available.
Now it no longer assume the higher 16 bits of a ref are either all 0s or
all 1s. The layout of bits of tabref64 is changed, but is not visible
to the client.