$ git clone -n https://src.fedoraproject.org/rpms/source-to-image.git /var/lib/mock/f31-build-73712-31022/root/chroot_tmpdir/scmroot/source-to-image
Cloning into '/var/lib/mock/f31-build-73712-31022/root/chroot_tmpdir/scmroot/source-to-image'...
$ git reset --hard 8d5d99f2900321c2a80af89612e3f52d80df4b07
HEAD is now at 8d5d99f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild