narrow: add progress-reporting when looking for local changes in `hg tracked`
Looking for local changes (changes not on the given remote) can take a
long time, so we should have progress-reporting for it.
Differential Revision: https://phab.mercurial-scm.org/D10501
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}