What is the Devuan equivalent of the Debian debian-archive-keyring package?

Debian keeps the keys required for a successful multistrap installation in a package called debian-archive-keyring.

(Multistrap is like debootstrap, but it can install packages from multiple repositories - e.g. the official repo plus your own organisation's repo. https://wiki.debian.org/Multistrap.)

Devuan also has the package debian-archive-keyring - it contains the Debian keys and does not contain the Devuan keys. In particular it doesn't contain the key 94532124541922FB.

There is no devuan-archive-keyring.

An example simple-config on https://wiki.debian.org/Multistrap includes a configuration line:

keyring=debian-archive-keyring

The specified keyring package is installed in the filesystem being built. Only packages from repositories signed with keys installed from keyring can be installed.

Which Devuan package contains the Devuan key 94532124541922FB?

If none, how do I use multistrap on Devuan?

I notice that multistrap is invoking apt-get with the parameters:

Getting package lists: APT_CONFIG=/tmp/multistrap.tRoXhw apt-get  
  -o Apt::Architecture=armhf 
  -o Dir::Etc::TrustedParts=/multistrap-devuan-ascii/etc/apt/trusted.gpg.d 
  -o Dir::Etc::Trusted=/multistrap-devuan-ascii/etc/apt/trusted.gpg 
  -o Apt::Get::Download-Only=true 
  -o Apt::Install-Recommends=false 
  -o Dir=/multistrap-devuan-ascii/ 
  -o Dir::Etc=/multistrap-devuan-ascii/etc/apt/ 
  -o Dir::Etc::Parts=/multistrap-devuan-ascii/etc/apt/apt.conf.d/ 
  -o Dir::Etc::PreferencesParts=/multistrap-devuan-ascii/etc/apt/preferences.d/ 
  -o APT::Default-Release='*' 
  -o Dir::State=/multistrap-devuan-ascii/var/lib/apt/ 
  -o Dir::State::Status=/multistrap-devuan-ascii/var/lib/dpkg/status 
  -o Dir::Cache=/multistrap-devuan-ascii/var/cache/apt/ update

Is there a way of overriding these variables without hacking the multistrap code?

If I could set Dir::Etc::TrustedParts or Dir::Etc::Trusted I could fix the issue.