$ git clone -n https://src.fedoraproject.org/rpms/x86info.git /var/lib/mock/f29-build-4466-1046/root/thebuilddir/tmp/scmroot/x86info
Cloning into '/var/lib/mock/f29-build-4466-1046/root/thebuilddir/tmp/scmroot/x86info'...
$ git reset --hard d742034ad4d42d8ef9e54201c2c691c0dd2da6b9
HEAD is now at d742034 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild