The reverse of accept, through the same ephemeral-checkout merge, now one function that does not know which direction it runs. Always merges in a working area of its own, checkout or not, so a tree is never left half-merged. Up to date is exit 0 with nothing written; a conflict is refused with its paths; a settled record is refused; a stacked landing is not, since refreshing a rung is what the rungs above it need. The refresh is a reply in the record's thread. Issue #152. check-in: c4b949ebbf user: dmestas tags: trunk