$ git clone -n https://src.fedoraproject.org/rpms/librx.git /var/lib/mock/f29-build-3097-851/root/thebuilddir/tmp/scmroot/librx
Cloning into '/var/lib/mock/f29-build-3097-851/root/thebuilddir/tmp/scmroot/librx'...
$ git reset --hard e3be07dbd8cb21aa34fa3588371fc751ed422778
HEAD is now at e3be07d - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild