Specifying the filename as part of the url doesn't appear to work with Alpine's build tools. Using a url like: https://sqlite.org/docsrc/zip/althttpd.zip?ci=202005092232&in=misc/althttpd.c the abuild tool fetches the file and the local filename is althttpd.c instead of althttpd.zip, though the .c file is actually zipped. I'll probably go back to using the Alpine syntax for renaming in the form: althttpd.zip::https://sqlite.org/docsrc/zip?ci=202005092232&in=misc/althttpd.c The first form is named correctly when downloading with firefox but abuild is probably using wget or something on the backend and it's not producing the intended filename.