The word "moonlighted requisition" is a complex term that combines two distinct concepts. "Moonlighted" refers to an action taken under the cover of darkness or secretly, while "requisition" refers to a formal request made for something that is needed. The spelling of this word can be broken down into its component sounds using IPA phonetic transcription. This would reveal that the word is pronounced as mʊnlaɪtɪd rɛkwɪzɪʃən, with emphasis on the first syllable of each word.
"Moonlighted requisition" is not a commonly used or known phrase, so it does not have a specific etymology. It appears to be a combination of the words "moonlighted" and "requisition", but the meaning and usage of the phrase are unclear. It is possible that it is a phrase invented specifically for a particular context or purpose.