$ git clone -n https://src.fedoraproject.org/rpms/libspectrum.git /var/lib/mock/f29-build-3107-853/root/thebuilddir/tmp/scmroot/libspectrum
Cloning into '/var/lib/mock/f29-build-3107-853/root/thebuilddir/tmp/scmroot/libspectrum'...
$ git reset --hard 1fd4db9ec7124a162e8e028426ddb6b9a8490234
HEAD is now at 1fd4db9 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild