$ git clone -n https://src.fedoraproject.org/rpms/perl-Filesys-Df.git /var/lib/mock/f31-build-64661-29592/root/chroot_tmpdir/scmroot/perl-Filesys-Df
Cloning into '/var/lib/mock/f31-build-64661-29592/root/chroot_tmpdir/scmroot/perl-Filesys-Df'...
$ git reset --hard f48b12217a6b57b5dcba3987c83c758dbf8e8d41
HEAD is now at f48b122 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild