Title pretty much says it all. The resulting version of Xcode 14.1 was 9.9 gigs on disk and would not verify correctly. Got this output from unxip when it failed.
$ ./unxip Xcode_14.1_Release_Candidate_2.xip
[1] 31188 illegal hardware instruction ./unxip Xcode_14.1_Release_Candidate_2.xip
I deleted Xcode, re-ran the same command, and it succeeded without issue, so unsure how relevant this is but thought it worth raising.
(Maybe?) Relevant details:
Late 2019 Macbook Pro with Intel i9
MacOS 12.5
Unxip 1.1.1 release