$ git clone -n https://src.fedoraproject.org/rpms/synthv1.git /var/lib/mock/f31-build-74588-31149/root/chroot_tmpdir/scmroot/synthv1
Cloning into '/var/lib/mock/f31-build-74588-31149/root/chroot_tmpdir/scmroot/synthv1'...
$ git reset --hard 74949f8db6811c700e509001f5d08e8489f978ce
HEAD is now at 74949f8 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild