What is the origin of the word hookey?

I recently was curious about the word hookey and was unable to get a good origin of the word. The online dictionaries all say the same thing, that it was short for “hook it”, which did not explain enough to me. Even though we all know what it means…to be absent without leave especially from school…I still want to know the true origin of the this simple word.

From this site:

The American Heritage Dictionary seems less sure:

Another vote for Dutch origins:

Lots of theories.