$ git clone -n https://src.fedoraproject.org/rpms/xpdf.git /var/lib/mock/f31-build-71543-30658/root/chroot_tmpdir/scmroot/xpdf
Cloning into '/var/lib/mock/f31-build-71543-30658/root/chroot_tmpdir/scmroot/xpdf'...
$ git reset --hard d7f1600cea2770f62bba56f066158798156f54b0
HEAD is now at d7f1600 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild