geoalchemy2: autopkgtest regression on s390x: AssertionError

[Sergio Durigan Junior]

geoalchemy2's dep8 test is failing on s390x:

=========================== short test summary info ============================
FAILED tests/test_functional.py::TestInsertionORM::test_WKTElement[postgresql]
FAILED tests/test_functional.py::TestInsertionORM::test_WKBElement[postgresql]
FAILED tests/test_functional_postgresql.py::TestUpdateORM::test_Raster[postgresql]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-16BSI]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-16BUI]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-32BSI]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-32BUI]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-32BF]
FAILED tests/gallery/test_decipher_raster.py::TestDecipherRaster::test_decipher_raster[postgresql-64BF]
FAILED tests/gallery/test_type_decorator.py::TestTypeDecorator::test_force_3d[postgresql]
FAILED tests/test_shape.py::test_from_shape - assert <WKBElement at 0x3ffb6c9...
==== 11 failed, 375 passed, 84 skipped, 6 deselected, 15 warnings in 3.60s =====

These failures seem related to big-endian support. There are Debian and upstream bugs reporting this problem.