anchor.diff:      final ghBranchRef = await gitDir.getBranchReference('gh-pages');
   
       final ghCommit = await gitDir.getCommit(ghBranchRef.sha);
  -    expect(ghCommit.message, startsWith('''
  +    expect(ghCommit.message, '''
   Built pkg1/example, pkg1/web, pkg2/example, pkg2/web
   
   Branch: master
  -Commit: ${masterCommit.single.sha}'''));
  +Commit: ${masterCommit.single.sha}''');
   
       final treeContents = await gitDir.lsTree(ghCommit.treeSha);
   
  
positive.code:     final ghBranchRef = await gitDir.getBranchReference('gh-pages');
  
      final ghCommit = await gitDir.getCommit(ghBranchRef.sha);
      expect(ghCommit.message, startsWith('''
  Built example, web
  
  Branch: master
  Commit: ${masterCommit.single.sha}'''));
  
      final treeContents = await gitDir.lsTree(ghCommit.treeSha);
  
  
negative.code:     final ghBranchRef = await gitDir.getBranchReference('gh-pages');
  
      final ghCommit = await gitDir.getCommit(ghBranchRef.sha);
      expect(ghCommit.message, '''
  Built web
  
  Branch: master
  Commit: ${masterCommit.single.sha}''');
  
      await _expectStandardTreeContents(gitDir, ghCommit.treeSha);
    }, timeout: const Timeout.factor(2));
  