To download all objects using wget:

wget -r -H -N --cut-dirs=3 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_0262ea1f00e34439850f3f1d71817205/SIDFEx_index/?show_all"

Name
SIDFEx_targettable.txt
data.tar.gz
indexTable.csv
indexTable.rda