Conversation so far:
What was Hekmatyar's relations with the Taliban?
The Pakistani military had supported Hekmatyar until then in the hope of installing a Pashtun-dominated government in Kabul, which would be friendly to their interests.
Did Pakistani military install the Pashtun dominated government?
By 1994, it had become clear that Hekmatyar would never achieve this.

Question: what did they do about it?
Self-contained rewrite: What did the Pakistanis do about installing the Pashtun government?