chore(arch): switch from git package to specific version

makepkg/PKGBUILD

 # Maintainer: Lukas Koenen <lukas.koenen@h-da.de>
-_pkgname=openconnect-hda
-pkgname="${_pkgname}-git"
+pkgname='openconnect-hda'
 
 pkgver=0.3.1
 pkgrel=1
 
-installdir="/usr"
+installdir='/usr'
 
 license=('GPL3')
 
-url="https://oauth2:kM1QX2AHt9YyvjQ-3Qfy@code.fbi.h-da.de/unified-it/openconnect-hda.git"
-
 arch=(x86_64)
 
 depends=('openconnect>=8.0.0' qt5-base)
 makedepends=(pkgconf)
 
-pkgdesc="A GlobalProtect VPN client (GUI) for Linux based on Openconnect and built with Qt5, supports SAML auth mode."
+pkgdesc='A GlobalProtect VPN client (GUI) for Linux, based on Openconnect and built with Qt5.'
 
-source=(
-    "${pkgname}::git+${url}"
-)
+source=("https://code.fbi.h-da.de/its/openconnect-hda/-/archive/${pkgver}/openconnect-hda-${pkgver}.tar.gz")
 sha512sums=('SKIP')
 
-pkgver() {
-    cd "${pkgname}"
-    # git, tags available
-    git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g'
-}
 build() {
-    cd "${srcdir}/${pkgname}"
-    mkdir "build"
+    cd "${srcdir}/${pkgname}-${pkgver}"
+    mkdir 'build'
     cd build
     cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="${pkgdir}/${installdir}" ..
     make
@@ -40,10 +30,10 @@ package() {
     mkdir -p "${pkgdir}/usr/share/applications"
     mkdir -p "${pkgdir}/usr/share/man/man8"
 
-    cd "${srcdir}/${pkgname}/build"
+    cd "${srcdir}/${pkgname}-${pkgver}/build"
     make install
 
-    install "${srcdir}/${pkgname}/src/openconnect-hda.8" "${pkgdir}/usr/share/man/man8"
-    install "${srcdir}/${pkgname}/src/openconnect-hda.desktop" "${pkgdir}/usr/share/applications"
+    install "${srcdir}/${pkgname}-${pkgver}/src/openconnect-hda.8" "${pkgdir}/usr/share/man/man8"
+    install "${srcdir}/${pkgname}-${pkgver}/src/openconnect-hda.desktop" "${pkgdir}/usr/share/applications"
     sed -i 's|^Icon=.*|'Icon=${installdir}/share/openconnect-hda/resources/logo.png'|' "${pkgdir}/usr/share/applications/openconnect-hda.desktop"
 }