mdadm-selftests: ERROR: A failure occurred in patch_source()

[rli9]

Steps to reproduce

$ lkp split-job jobs/mdadm-selftests.yaml
$ lkp install mdadm-selftests-1HDD-02.yaml
distro=debian
version=12
...
==> Starting patch_source()...
PWD=/lkp-tests/tmp-pkg/mdadm-selftests/src, startdir=/lkp-tests/programs/mdadm-selftests/pkg, pkgname=mdadm-selftests, srcdir=/lkp-tests/tmp-pkg/mdadm-selftests/src
patches=/lkp-tests/programs/mdadm-selftests/pkg/mdadm-selftests01.patch
total 4
drwxr-xr-x 9 root root 4096 Feb  3 06:38 mdadm-selftests
item=./mdadm-selftests, dir=./mdadm-selftests
patch_source: patch /lkp-tests/programs/mdadm-selftests/pkg/mdadm-selftests01.patch
patching file tests/env-ddf-template
Hunk #1 FAILED at 3.
1 out of 1 hunk FAILED -- saving rejects to file tests/env-ddf-template.rej
==> ERROR: A failure occurred in patch_source().
    Aborting...
Install mdadm-selftests failed