$ git clone -n https://src.fedoraproject.org/rpms/mrtg.git /var/lib/mock/f31-build-56702-28243/root/thebuilddir/tmp/scmroot/mrtg
Cloning into '/var/lib/mock/f31-build-56702-28243/root/thebuilddir/tmp/scmroot/mrtg'...
$ git reset --hard 2c9f29cc9058217661b446183e6354f1e85193e2
HEAD is now at 2c9f29c - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild