--- a/mercurial/hg.py	Wed Nov 14 15:07:02 2018 +0800
+++ b/mercurial/hg.py	Wed Nov 14 15:06:21 2018 +0800
@@ -365,7 +365,7 @@
     try:
         hardlink = None
         topic = _('linking') if hardlink else _('copying')
-        with ui.makeprogress(topic) as progress:
+        with ui.makeprogress(topic, unit=_('files')) as progress:
             num = 0
             srcpublishing = srcrepo.publishing()
             srcvfs = vfsmod.vfs(srcrepo.sharedpath)