git can not be built for s390x since update to git-2.38.0

[Sarah Julia Kriesch <sarah.kriesch@opensuse.org>]

I am one of the zsystems Maintainers (s390x architecture) at openSUSE 
and git can not be built any more since the update from 2.37.3 to 
2.38.0, and with 2.38.1 afterwards. We have tried to debug it.

There is no real test error output, but we can identify, that it is 
happening in the test part with check-chainlint.

[  386s] + ./.make -j2 test
[  386s] /usr/bin/make -C git-gui  gitexecdir='/usr/libexec/git' all
[  387s] /usr/bin/make -C gitk-git  all
[  387s] /usr/bin/make -C templates  SHELL_PATH='/bin/sh' 
PERL_PATH='/usr/bin/perl'
[  387s] make[1]: Entering directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/templates'
[  387s] : no custom templates yet
[  387s] make[1]: Leaving directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/templates'
[  387s] /usr/bin/make -C t/ all
[  387s] make[1]: Entering directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/t'
[  387s] rm -f -r 'test-results'
[  387s] make[1]: Leaving directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/t'
[  387s] make[1]: Entering directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/t'
[  387s] make[1]: *** [Makefile:83: check-chainlint] Error 1
[  387s] make[1]: Leaving directory 
'/home/abuild/rpmbuild/BUILD/git-2.38.1/t'
[  387s] make[1]: *** Waiting for unfinished jobs....
[  388s] make: *** [Makefile:3075: test] Error 2
[  388s] error: Bad exit status from /var/tmp/rpm-tmp.ztqAAp (%check)
[  388s]

We figured out, that the perl script have been changed there in the last 
month.
I have to give the hint, that all versions of openSUSE for s390x are 
affected by this build failure. Builds are working for the other 
architectures.

How can we fix this issue?

-- 
Sarah Julia Kriesch
openSUSE