Query ragrding libosmocore installation

Sir, I am working on a project to implement a GSM test-bed scenario. I need do install openBSC. I go through your page indicating the installation guide. My problem is git clone is not working.Everytime it is telling that the server is not responding. When i tried to install using tarballs the version conflict is coming in case of libosmo-abis and openbsc as the tarballs are provided of different versions. libosmocore 0.1.30 but libosmo-abis needs libosmocore >=0.3.0 . Please help me regarding this.