Fix URL

PKGBUILD

@@ -8,7 +8,7 @@ pkgname=pkgconf
 pkgver=1.5.1
 pkgrel=1
 pkgdesc="Package compiler and linker metadata toolkit"
-url="https://github.com/pkgconf/pkgconf"
+url="https://git.dereferenced.org/pkgconf/pkgconf"
 license=(custom:ISC)
 arch=(x86_64)
 depends=(glibc sh)
@@ -18,8 +18,7 @@ conflicts=(pkg-config)
 replaces=(pkg-config)
 groups=(base-devel)
 _commit=5601568267939c4890bab9cbd64c30256455f29a  # tags/pkgconf-1.5.1
-source=("git+https://git.dereferenced.org/pkgconf/pkgconf#commit=$_commit"
-        platform-pkg-config.in)
+source=("git+$url#commit=$_commit" platform-pkg-config.in)
 sha256sums=('SKIP'
             '7c61338fbd83f9783d805c2f2f97b426977895a2f4b79e0ae5bc8e9d7996edaa')