The command --update-trustdb is needed for mmdebstrap

Hi,

this is somehow a show-stopper for me to switch as I regularly need to use mmdebstrap.

philip@debian:~$ mmdebstrap --variant=buildd unstable ~/.cache/sbuild/unstable-amd64.tar http://deb.debian.org/debian
I: automatically chosen mode: unshare
I: chroot architecture amd64 is equal to the host's architecture
gpg: The command --update-trustdb is not yet implemented in the Sequoia
gpg: Chameleon.  To help us prioritize our work, please file a bug at
gpg:   https://gitlab.com/sequoia-pgp/sequoia-chameleon-gnupg/-/issues
E: gpg failed to initialize trustdb:: 512