Create deb package from existing binaries and files

I am trying to create a debian package with OBS. The package should only contain/install files and binaries from a tarball. Therefore, no compilation is needed in the package build process.
I have included the files in the debian.install file and used dh with the option --include-binaries in the debian.rules file.
Unfortunately, the build fails with the error (see https://build.opensuse.org/package/live_build_log/home:devity/dty-client/Debian_11/x86_64):
dpkg-source: error: cannot represent change to dty/linux-client: binary file contents changed

Do I need to add other options or skip some steps completely to just copy the files and binaries?

Many thanks