init: expose --worktree option

There's a few rough edges here still, but no known corruption ones,
so open it up a bit for people to experiment with.

Bug: https://crbug.com/gerrit/11486
Change-Id: I81e0122ab6d3e032c546c8239dd4f03740676e80
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/299242
Reviewed-by: Michael Mortensen <mmortensen@google.com>
Tested-by: Mike Frysinger <vapier@google.com>
diff --git a/repo b/repo
index d32a84b..768050e 100755
--- a/repo
+++ b/repo
@@ -318,7 +318,7 @@
                    help='filter for use with --partial-clone '
                         '[default: %default]')
   group.add_option('--worktree', action='store_true',
-                   help=optparse.SUPPRESS_HELP)
+                   help='use git-worktree to manage projects')
   group.add_option('--archive', action='store_true',
                    help='checkout an archive instead of a git repository for '
                         'each project. See git archive.')
diff --git a/subcmds/init.py b/subcmds/init.py
index c2376b6..471efc1 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -127,10 +127,8 @@
     g.add_option('--clone-filter', action='store', default='blob:none',
                  dest='clone_filter',
                  help='filter for use with --partial-clone [default: %default]')
-    # TODO(vapier): Expose option with real help text once this has been in the
-    # wild for a while w/out significant bug reports.  Goal is by ~Sep 2020.
     g.add_option('--worktree', action='store_true',
-                 help=optparse.SUPPRESS_HELP)
+                 help='use git-worktree to manage projects')
     g.add_option('--archive',
                  dest='archive', action='store_true',
                  help='checkout an archive instead of a git repository for '