$ git clone -n https://src.fedoraproject.org/rpms/potrace.git /var/lib/mock/f31-build-88830-32012/root/chroot_tmpdir/scmroot/potrace
Cloning into '/var/lib/mock/f31-build-88830-32012/root/chroot_tmpdir/scmroot/potrace'...
$ git reset --hard 9961045f1ab4d8fccf06b63e6d286378b3fcff01
HEAD is now at 9961045 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild