Currently the purpose/type of each tarball is only indicated by the URI path, not the filename itself. So if you download the files using curl or wget, they are indistinguishable from each other, which is annoying when debugging locally.

https://github.com/mongodb/mongo/blob/ff5bdd3321d525dd9d56595330b2ea6b98a2b87f/etc/evergreen.yml#L720