.arcconfig

test-copies: improve description of the C+H case

This will make its role clearer.

Differential Revision: https://phab.mercurial-scm.org/D10045

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    "phabricator.uri": "https://phab.mercurial-scm.org/",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}