Does d/watch work for commits signed via ssh?

[Nilesh Patra <nilesh@debian.org>]

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Upstream for golang-sourcehut-rockorager-go-jmap has started signing tags via
ssh instead of gpg keys now.

I tried to search if d/watch has the functionality to validate ssh sigs instead, but
all I could find is the d/u/signing-keys.asc which is gpg armor style signature, and hence

opts="mode=git, gitmode=full, pgpmode=gittag"

in d/watch simply does not work.

Does anyone know how to check for ssh signing instead?

-- 
Best,
Nilesh