$ git clone -n https://src.fedoraproject.org/rpms/gtk4.git /var/lib/mock/f31-build-85813-31627/root/chroot_tmpdir/scmroot/gtk4
Cloning into '/var/lib/mock/f31-build-85813-31627/root/chroot_tmpdir/scmroot/gtk4'...
$ git reset --hard d406343b65165d5b1f541969c037c2bec9b5b467
HEAD is now at d406343 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild