[[!comment format=mdwn
 username="joey"
 subject="""comment 1"""
 date="2020-05-05T18:36:14Z"
 content="""
I don't know. The code that does it is in /etc/etckeeper/commit.d/50vcs-commit 

AFAICS, unless sudo does not set `SUDO_USER` (which it usually does) 
or "whoami" does not output a username, that code *always* sets
`GIT_AUTHOR_NAME` etc, which avoid git failing in that way.
"""]]
