It says fingerprint, so it's fingerprint. Using email or name would not be as secure.

Le 26 octobre 2022 07:35:20 GMT+02:00, jgart <jgart@dismail.de> a écrit :
On Wed, 26 Oct 2022 07:21:35 +0200 Julien Lepiller <julien@lepiller.eu> wrote:
From the manual: "signer is the OpenPGP fingerprint of public key used to sign commit.", but we should still catch this error :)

Is it possible to give the email instead of the fingerprint?

Deduce the fingerprint from the email?