Hatches plan to skip church expedition (5)

I believe the answer is:

haste

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'expedition' is the definition.
(expedition is expediting, doing something quickly)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for haste that I've seen before include "More of this proverbially slows you down" , "Overly eager speed" , "Excessive speed or urgency" , "Rush; urgency" , "Leader abandons modest" .)

I've seen this clue in The Guardian.

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