sync: With --mirror option, don't display no-use-superproject... message.

+ Display 'Defaulting to no-use-superproject because there is no working tree.'
  message if --use-superproject option is used and we are not using
  superproject because manifest is either a mirror or is an archive.

Tested the code with the following commands.

$ ./run_tests -v

Tested the sync code by using repo_dev alias and pointing to this CL.

$ repo init -u https://android.googlesource.com/mirror/manifest --mirror

$ repo_dev sync
Receiving objects: 100% (3/3), done.eiving objects:  33% (1/3)

$ repo_dev sync --use-superproject
Defaulting to no-use-superproject because there is no working tree.
Fetching:  0% (0/2158) warming up

Bug: https://crbug.com/gerrit/15368
Change-Id: I16b87ee9623315dbc3100b612b1decdaab7ac1dc
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/325797
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Raman Tenneti <rtenneti@google.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/subcmds/sync.py b/subcmds/sync.py
index 4898430b..707c5bbd 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -986,10 +986,11 @@ later is required to fix a server side protocol bug.
 
     load_local_manifests = not self.manifest.HasLocalManifests
     use_superproject = git_superproject.UseSuperproject(opt, self.manifest)
-    if self.manifest.IsMirror or self.manifest.IsArchive:
+    if use_superproject and (self.manifest.IsMirror or self.manifest.IsArchive):
       # Don't use superproject, because we have no working tree.
       use_superproject = False
-      print('Defaulting to no-use-superproject because there is no working tree.')
+      if opt.use_superproject is not None:
+        print('Defaulting to no-use-superproject because there is no working tree.')
     superproject_logging_data = {
         'superproject': use_superproject,
         'haslocalmanifests': bool(self.manifest.HasLocalManifests),