$ git clone -n https://src.fedoraproject.org/rpms/raw-thumbnailer.git /var/lib/mock/f29-build-3991-982/root/thebuilddir/tmp/scmroot/raw-thumbnailer
Cloning into '/var/lib/mock/f29-build-3991-982/root/thebuilddir/tmp/scmroot/raw-thumbnailer'...
$ git reset --hard 67214639221f467709f4690af3f8995a91bd2e18
HEAD is now at 6721463 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild