It's possible that:
* It's a typo: Perhaps you meant a different name, or the word has been misspelt.
* It's a niche style: There might be a specific, less common style someone calls the "Kiefer haircut," maybe after a particular person named Kiefer.
* It's a regional or personal term: Someone might have given that name to a haircut they like or that they associate with someone they know.
If you can provide more details about where you heard the term, who might have it, or any other descriptive information, I might be able to help you find out what kind of haircut it refers to.