build-and-deploy: fix builds on arm64

Obviously, the git-sdk-arm64 doesn't have /mingw64/bin/git.exe. Building
the source files using MINGW_ARCH=mingw64 also isn't going to work.
Let's update the logic a bit to account for this scenario.

Author: dennisameling

.github/workflows/build-and-deploy.yml

@@ -250,9 +250,20 @@ jobs:
           dir="$(cygpath -au artifacts)" &&
           mkdir -p "$dir" &&
 
+          case "$ARCHITECTURE" in
+            aarch64)
+              GIT_EXE="/clangarm64/bin/git.exe"
+              BUILD_SRC=
+              ;;
+            *)
+              GIT_EXE="/mingw64/bin/git.exe"
+              BUILD_SRC="YesPlease"
+              ;;
+          esac &&
+
           {
             test -f /usr/bin/git ||
-            printf '#!/bin/sh\n\nexec /mingw64/bin/git.exe "$@"\n' >/usr/bin/git
+            printf '#!/bin/sh\n\nexec '$GIT_EXE' "$@"\n' >/usr/bin/git
           } &&
 
           MINGW_ARCHS_TO_BUILD=$(
@@ -275,8 +286,11 @@ jobs:
           MAKEFLAGS=-j6 PKGEXT='.pkg.tar.xz' MINGW_ARCH=$MINGW_ARCHS_TO_BUILD $MAKEPKG -s --noconfirm &&
           cp *.pkg.tar* "$dir/" &&
 
-          MAKEFLAGS=-j6 SRCEXT='.src.tar.gz' MINGW_ARCH=mingw64 $MAKEPKG --allsource &&
-          cp *.src.tar* "$dir/" &&
+          if test -n "$BUILD_SRC"
+          then
+            MAKEFLAGS=-j6 SRCEXT='.src.tar.gz' MINGW_ARCH=mingw64 $MAKEPKG --allsource &&
+            cp *.src.tar* "$dir/"
+          fi &&
 
           # Ensure that the Git worktree is still clean
           ls -la &&