It should also be noted if you are using gitsync in your updater settings to change branch name from master to RELENG_2_0
Unless you are using that to track IPv6, in which case you really do want master. :-)
I wasn't aware anyone was tracking 2.0 on top of 2.0 with gitsync, not much of a point to that. Might hurt more than it helps in some cases, but that's debatable.