function fetchFile() {
		resolve( filepath, repos, opts, done );
		/**
		* Callback invoked after query completion.
		*
		* @private
		* @param {(Error|null)} error - error object
		* @param {Object} results - query results
		* @returns {void}
		*/
		function done( error, results ) {
			if ( error ) {
				return clbk( error );
			}
			clbk( null, results );
		}
	}
Fetches a file from one or more repositories.

@private
@returns {void}