$ git clone -n https://src.fedoraproject.org/rpms/libpoly.git /var/lib/mock/f31-build-69913-30380/root/chroot_tmpdir/scmroot/libpoly
Cloning into '/var/lib/mock/f31-build-69913-30380/root/chroot_tmpdir/scmroot/libpoly'...
$ git reset --hard af9be7ab186acae7016dacd4d04633199e58ca45
HEAD is now at af9be7a - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild