unzip step doesn't set permissions on extracted files

node() {
    // create an example ZIP file
    sh '''\
        base64 -d > test.zip << EOF
        UEsDBAoAAAAAAJ2SrkwAAAAAAAAAAAAAAAAIABwAdGVzdC5iaW5VVAkAA1qp+VpaqfladXgLAAEE
        6AMAAAToAwAAUEsBAh4DCgAAAAAAnZKuTAAAAAAAAAAAAAAAAAgAGAAAAAAAAAAAAP2BAAAAAHRl
        c3QuYmluVVQFAANaqfladXgLAAEE6AMAAAToAwAAUEsFBgAAAAABAAEATgAAAEIAAAAAAA==
        EOF'''.stripIndent()
    sh 'unzip -o test.zip && ls -l test.bin && rm test.bin'
    unzip zipFile: 'test.zip', quiet: true
    sh 'ls -l test.bin'
}

+ ls -l test.bin
-rwxrwxr-x 1 jenkins jenkins 0 May 14 15:20 test.bin
...
+ ls -l test.bin
-rw-r--r-- 1 jenkins jenkins 0 May 14 15:51 test.bin