This looks like a neat repo that I'd like to try out. What is the target deployment environment you are expecting? Do you have any dependency/build/installation instructions you'd like to share?
Multi node IBM Cloud Private Community Edition 3.2.x w/ Kubernetes 1.13.5 in a Box. Terraform, Packer and BASH based Infrastructure as Code script sets up a multi node LXD cluster, installs ICP-CE and clis on a metal or VM Ubuntu 18.04 host.
This Terraform example configurations uses the IBM Cloud provider to provision virtual machines on IBM Cloud Infrastructure (SoftLayer) and TerraForm Module ICP Deploy to prepare VSIs and deploy IBM Cloud Private on them in Highly Available configuration. This Terraform template automates best practices learned from installing ICP on IBM Cloud Infrastructure.
By operating on a copy of g2o you are only creating a version that works for your use-case and your source-based build at this moment in time.
Your g2o version is already slightly out of date by the way :)