$ git clone -n https://src.fedoraproject.org/rpms/rdiff-backup.git /var/lib/mock/f31-build-76701-31442/root/chroot_tmpdir/scmroot/rdiff-backup
Cloning into '/var/lib/mock/f31-build-76701-31442/root/chroot_tmpdir/scmroot/rdiff-backup'...
$ git reset --hard 2dba11acbe8e2a82a7bbea5e7f3085bb1053c757
HEAD is now at 2dba11a - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild