$ git clone -n https://src.fedoraproject.org/rpms/diffpdf.git /var/lib/mock/f31-build-59021-28525/root/chroot_tmpdir/scmroot/diffpdf
Cloning into '/var/lib/mock/f31-build-59021-28525/root/chroot_tmpdir/scmroot/diffpdf'...
$ git reset --hard 8ed4e546c5aaf87510d3bd4a81e8f1d824cde9ba
HEAD is now at 8ed4e54 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild