share: use `get_clone_path`
Since `hg share` is mostly like clone, do the same changes there.
Differential Revision: https://phab.mercurial-scm.org/D10419
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}