Fat header in: fixture
fat_magic 0xcafebabe
nfat_arch 2
architecture x86_64
    cputype 16777223
    cpusubtype 3
    offset 16384
    size 4096
    align 2^14 (16384)
architecture arm64
    cputype 16777228
    cpusubtype 0
    offset 32768
    size 8192
    align 2^14 (16384)