$ git clone -n https://src.fedoraproject.org/rpms/perl-Ref-Util-XS.git /var/lib/mock/f31-build-63411-29353/root/chroot_tmpdir/scmroot/perl-Ref-Util-XS
Cloning into '/var/lib/mock/f31-build-63411-29353/root/chroot_tmpdir/scmroot/perl-Ref-Util-XS'...
$ git reset --hard 4768a9d9a9cc80b0d868d7be8e0091c2f0d538c1
HEAD is now at 4768a9d - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild