sync: Ignore repo project when checking partial syncs

The repo project is fetched at most once a day and should be ignored
when checking if the tree is partially synced.

Bug: b/286126621, b/271507654
Change-Id: I684ed1669c3b3b9605162f8cc9d57185bb3dfe8e
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/383494
Commit-Queue: Gavin Mak <gavinmak@google.com>
Tested-by: Gavin Mak <gavinmak@google.com>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>

subcmds/sync.py

@@ -2007,7 +2007,11 @@ class _LocalSyncState(object):
         """Return whether a partial sync state is detected."""
         self._Load()
         prev_checkout_t = None
-        for data in self._state.values():
+        for path, data in self._state.items():
+            if path == self._manifest.repoProject.relpath:
+                # The repo project isn't included in most syncs so we should
+                # ignore it here.
+                continue
             checkout_t = data.get(self._LAST_CHECKOUT)
             if not checkout_t:
                 return True