is equivalent to 'rev^1'). As a special rule,
'rev^0' means the commit itself and is used when 'rev' is the
object name of a tag object that refers to a commit object.
is equivalent to 'rev^1'). As a special rule,
'rev^0' means the commit itself and is used when 'rev' is the
object name of a tag object that refers to a commit object.