Installation from source (when customizing)
Install prerequisites as documented in install from Galaxy. Then install OS Migrate from source:
git clone https://github.com/os-migrate/os-migrate
cd os-migrate
# > Here you can checkout a specific commit/branch if desired <
make toolbox-build
./toolbox/run make
pushd releases
ansible-galaxy collection install --force os_migrate-os_migrate-latest.tar.gz
popd