tree 33782b57a44f1676eaaa447c55a28a0ebcf9a9a2
parent a44e5908221a8b5878c743134891f0c447a493e9
author David Pursehouse <dpursehouse@collab.net> 1526525618 +0900
committer David Pursehouse <dpursehouse@collab.net> 1526530038 +0000

Annotate RefUpdate and CommitReceived as Singleton

These should be singletons so that they are not instantiated every
time a hook is executed.

Change-Id: I32e67a85c24138148c1cff97d76144030942930e