pkgname=mygit
pkgver=r1.abc
pkgrel=1
pkgdesc="VCS package example"
arch=(x86_64)
url="https://example.org"
depends=('git')
source=("git+https://example.org/repo.git")
sha256sums=('SKIP')

pkgver() {
  cd "$srcdir/repo"
  git describe --long --tags | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g'
}

build() {
  cd "$srcdir/repo"
  make
}

package() {
  cd "$srcdir/repo"
  make DESTDIR="$pkgdir" install
}