014,
You seem to download only PKGBUILD without the etcher shim that is hosted next to it. Please use the Download snapshot button that can be found on the right side of each package page on AUR. Or use Git Clone URLs that can be found on the very beginning of each package page.
Pinned Comments
ali.molaei commented on 2019-04-17 20:10 (UTC)
Please don't flag package out of date for "Pre-release" in GitHub repo!