I have made all the necessary adjustments.

Much appreciated. Could I ask for: install -D -m644 "${pkgname}-${pkgver}"/assets/start-go-hass-agent.desktop "${pkgdir}/usr/share/applications/start-go-hass-agent.desktop" to be added to the PKGBUILD too?

I'll update the PKGBUILD to the signed git commits used from v14 and onward. That should prevent upstream from stealthily repackaging the source code.

Fails to build. To make this package installable, I had to:

diff --git a/PKGBUILD b/PKGBUILD
index db8b66f..e862f50 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -8,7 +8,7 @@ arch=('x86_64')
 url="https://github.com/joshuar/go-hass-agent"
 license=('MIT')
 source=("${pkgname}-${pkgver}.tar.gz::${url}/archive/refs/tags/v${pkgver}.tar.gz")
-b2sums=('656ff5ed650fb7f409181a5f7cdf099bb4f4403482828894dcd7476d335ab7a3204ba4bb2aa5a5733fc8657d93d4b2550634491c6988054b16cdcdc71ff134d7')
+b2sums=('1d64500caa17cd5c5056d9bdb4a53478e65e15903f1453c5a022d27dbbb9531899506a714011f9f963bcaa533d1287447403fb68fe3d226dcb1742f64596dfd2')
 depends=('libx11' 'libglvnd')
 makedepends=('go' 'xorg-server' 'libxcursor' 'libxrandr' 'libxinerama' 'libxi' 'libcap')