def do_refresh_tags():
	try:
		# GET /repos/:owner/:repo/topics
		url = "https://api.github.com/users/%s/repos" % config['github_username']
		#print("URL: ",url)
		resp = requests.get(url) #headers={'Accept':'application/vnd.github.mercy-preview+json'}
		data = json.loads(resp.text)
		print("%d repos fetched" % len(data))
		#print("data: ",data)
		if not 'topics' in config: config['topics'] = {}
		for repo in data:
			print("refreshing tags for %s..." % repo['full_name'])
			if not dry_run:
				topics = fetch_topics(repo['full_name'])
				print("%d tags fetched" % len(topics))
				config['topics'][repo['full_name']] = topics
				cfgsaver.save(pkg_name, config)
				print("")
	except Exception as ex:
		print("Error occurred: " + str(ex))
		#raise