Problems when building for several architectures + uploading to mini-dinstall

I'm using this plugin to build packages and publish to mini-dinstall managed repository.
I have several slaves with different architectures, so the packages are built as multi-configuration projects, simultaneously for armel, armhf, i386 and amd64.

Resulting artifacts have the same filenames for .tar.xz and .dsc for all configurations

Therefore, if a debrelease from a concurrent build is called before mini-dinstall processes the incoming - .tar.xz and .dsc are overwritten. As a result only one package is added.

Is there any recommended way to fix this apart from forcing a sequential build for each configuration and call remote mini-dinstall -b to index newly uploaded package everytime?

Start by reproducing concurrent multi-configuration builds for armel, armhf, i386, and amd64, then trace how the resulting .tar.xz and .dsc artifacts are passed to debrelease and mini-dinstall. Done should prevent artifacts from different architectures being overwritten and allow all packages to be indexed without requiring sequential builds.

Written by the indexing model from the issue text.