prow/github/client.go
func (c *Client) EditOrgHook(org string, id int, req HookRequest) error {
	c.log("EditOrgHook", org, id)
	return c.editHook(org, nil, id, req)
}
func (c *Client) EditOrgHook(org string, id int, req HookRequest) error {
	c.log("EditOrgHook", org, id)
	return c.editHook(org, nil, id, req)
}
// EditOrgHook updates an existing hook with new info (events/url/secret)
// https://developer.github.com/v3/orgs/hooks/#edit-a-hook