$ git clone -n https://src.fedoraproject.org/rpms/PerceptualDiff.git /var/lib/mock/f31-build-49332-27272/root/chroot_tmpdir/scmroot/PerceptualDiff
Cloning into '/var/lib/mock/f31-build-49332-27272/root/chroot_tmpdir/scmroot/PerceptualDiff'...
$ git reset --hard 2695181febb8517babc54f4f9eec0b9825799265
HEAD is now at 2695181 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild