How to use guix hash --serializer?

[Mortimer Cladwell]

Hi,
Using guix package --install-from-file=guix.scm I determined the commit
hash from the error message. The git-reference that works is:

 (uri (git-reference
                      (url "git://github.com/mbcladwell/shinyln.git")
                      (commit "9f06568ffa61953ab48c93e1623d88b4e672af42")))
                (sha256 (base32
"10nfjllq28jrzxd4dfqm6xzx8f2g1m6p2vivzihxc7d3ac1imnk2"))

 In the local directory from where I issued git commit -am "my message" I
try the following:

 --------------------------------------------------------
$git log -n 1

commit 9f06568ffa61953ab48c93e1623d88b4e672af42 (HEAD -> master,
origin/master)
Author: mbcladwell <mbcladwell@gmail.com>
Date:   Tue Jan 4 09:08:09 2022 -0500

    removed chmod statement

$guix hash -rx .
1ykbpz6pqx0bkvfp3c60qfb9r0xvpmrs0ldlxm2qw0zd8f67lmaj

$guix hash --serializer=git -x .
0lai57r0p11q041b3flriv56j6n8lizwb69yv7j396yiivkspv3x

$guix hash --serializer=git .
0lai57r0p11q041b3flriv56j6n8lizwb69yv7j396yiivkspv3x

------------------------------------------------------------

Appears that the -x switch has no effect.
-r and --serializer give different results.
Neither result matches the (valid) error message hash.
Where did I go wrong?
Thanks
Mortimer



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