if srv.ping {
		if scheme != "" {
			match["repo"] = scheme + "://" + match["repo"]
		} else {
			for _, scheme := range vcs.scheme {
				if security == web.Secure && !vcs.isSecureScheme(scheme) {
					continue
				}
				if vcs.pingCmd != "" && vcs.ping(scheme, match["repo"]) == nil {
					match["repo"] = scheme + "://" + match["repo"]
					goto Found
				}
			}
			// No scheme found. Fall back to the first one.
			match["repo"] = vcs.scheme[0] + "://" + match["repo"]
		Found:
		}
	}

	if srv.ping {
		scheme = vcs.scheme[0] // default to first scheme
		if vcs.pingCmd != "" {
			// If we know how to test schemes, scan to find one.
			for _, scm := range vcs.scheme {
			if security == web.Secure && !vcs.isSecureScheme(scm) {
				continue
			}
			if vcs.ping(scheme, match["repo"]) == nil {
				scheme = scm
				break
			}
		}
		match["repo"] = scheme + "://" + match["repo"]
	}