Fix flake8 warnings for some files

Change-Id: If67f8660cfb0479f0e710b3566285ef401fcf077
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/355969
Tested-by: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Mike Frysinger <vapier@google.com>

project.py

@@ -54,6 +54,7 @@ class SyncNetworkHalfResult(NamedTuple):
   # commit already present.
   remote_fetched: bool
 
+
 # Maximum sleep time allowed during retries.
 MAXIMUM_RETRY_SLEEP_SEC = 3600.0
 # +-10% random jitter is added to each Fetches retry sleep duration.
@@ -63,6 +64,7 @@ RETRY_JITTER_PERCENT = 0.1
 # TODO(vapier): Remove knob once behavior is verified.
 _ALTERNATES = os.environ.get('REPO_USE_ALTERNATES') == '1'
 
+
 def _lwrite(path, content):
   lock = '%s.lock' % path
 
@@ -3415,6 +3417,7 @@ class RepoProject(MetaProject):
     except OSError:
       return 0
 
+
 class ManifestProject(MetaProject):
   """The MetaProject for manifests."""
 
@@ -3845,11 +3848,12 @@ class ManifestProject(MetaProject):
       self.config.SetBoolean('repo.superproject', use_superproject)
 
     if not standalone_manifest:
-      if not self.Sync_NetworkHalf(
+      success = self.Sync_NetworkHalf(
           is_new=is_new, quiet=not verbose, verbose=verbose,
           clone_bundle=clone_bundle, current_branch_only=current_branch_only,
           tags=tags, submodules=submodules, clone_filter=clone_filter,
-          partial_clone_exclude=self.manifest.PartialCloneExclude).success:
+          partial_clone_exclude=self.manifest.PartialCloneExclude).success
+      if not success:
         r = self.GetRemote()
         print('fatal: cannot obtain manifest %s' % r.url, file=sys.stderr)