I know it almost sounds crazy to think that the traditional Kukri knives, (made a century or more ago and that were used by Gurkha soldiers), had tangs that only went half way or two thirds through the handle... But, yes, that is the traditional method.
And, we are not talking a partial length tang that then got pinned in place, or something like that... They were simply glued into place within the handle. With what kind of miracle glue?... A natural glue, not some fancy schmancy modern day epoxy.
Did it work?... Well, the knives used by the famous men that made the knife famous too, were these exact construction method knives. So, it must have worked

Of course, (like with almost any design), things have evolved with the kukri knives to include tangs that go all the way through the handles and are peened over metal butt caps. And, there are threaded end tangs that go all the way through the handle and are secured by nut, (and often peened as well). And then there are the full handle girth tangs that are often secured to their slabs of handle scales via glue AND pins/rivets.
In the end, the kukri has evolved to offer more options, including in tang/handle construction. That said, the partial through tang, that was/is simply glued into place, has a proven track record with the Nepalese. It is supposedly still a very popular choice, if not THE most popular choice, by the common folks living in Nepal.
I guess each method has it's pros and cons, but this most traditional of kukri handle attachment has withstood the test of time. I"m sure ease of it being re-handled, may be one of it's strongest points.