$ [before, curl only] sh before.sh
curl: (22) The requested URL returned error: 404
exit=22  leftover=0

$ [after, curl only] sh after.sh
curl: (22) The requested URL returned error: 404
Could not download http://127.0.0.1:18917/v9.9.9/SHA256SUMS for t3 9.9.9. Check that this release exists and the host can reach it.
exit=1  leftover=0

$ [before, wget only] sh before.sh
exit=8  leftover=0

$ [after, wget only] sh after.sh
Could not download http://127.0.0.1:18917/v9.9.9/SHA256SUMS for t3 9.9.9. Check that this release exists and the host can reach it.
exit=1  leftover=0