libgit2: backport a feature for nix

See msys2#22459 (comment)

mingw-w64-libgit2/PKGBUILD

@@ -5,7 +5,7 @@ pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}"
          "${MINGW_PACKAGE_PREFIX}-${_realname}-winhttp")
 pkgver=1.8.4
-pkgrel=1
+pkgrel=2
 pkgdesc='A linkable library for Git (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
@@ -30,18 +30,25 @@ makedepends=(
 )
 source=("${msys2_repository_url}/archive/v${pkgver}/${_realname}-${pkgver}.tar.gz"
         "0001-libgit2-1.4.2-rc-filename.patch"
-        "0003-libgit2-cmake-fix-pkgconfig.patch")
+        "0003-libgit2-cmake-fix-pkgconfig.patch"
+        "https://github.com/libgit2/libgit2/commit/9ddd72f22a1c02938dcfb60981b7b8856e63be9a.patch")
 noextract=(${_realname}-${pkgver}.tar.gz)
 sha256sums=('49d0fc50ab931816f6bfc1ac68f8d74b760450eebdb5374e803ee36550f26774'
             '1a217eddf7daa549b12ccf88e275782ac7a7fa385d5afb59aac0351ee5b97a44'
-            '0d7cff6db9a7d3f0ed63540a3a91365afeb43217787b0db8519c34fe73bc9757')
+            '0d7cff6db9a7d3f0ed63540a3a91365afeb43217787b0db8519c34fe73bc9757'
+            'c0bfa0742cedcdec5b8d65c49b106d817bdfdd55097cda003d08d9e69d5cb48f')
 
 prepare() {
   tar --exclude tests/resources/testrepo-worktree/link_to_new.txt -zxf ${_realname}-${pkgver}.tar.gz
   cd ${_realname}-${pkgver}
 
   patch -Np1 -i "${srcdir}/0001-libgit2-1.4.2-rc-filename.patch"
   patch -Np1 -i "${srcdir}/0003-libgit2-cmake-fix-pkgconfig.patch"
+
+  # Backport for nix: https://github.com/msys2/MINGW-packages/issues/22459
+  # https://github.com/libgit2/libgit2/pull/6875
+  # Adds ABI, so make sure to check on the next update if rebuilds are needed
+  patch -Np1 -i "${srcdir}/9ddd72f22a1c02938dcfb60981b7b8856e63be9a.patch"
 }
 
 do_build() {