Use the host target for source-built release tools

examples/woodpecker/releasekit-source-delivery.yml

@@ -30,6 +30,9 @@ steps:
         trap 'rm -rf "$${bootstrap_dir}"' EXIT
         export GOWORK=off
         export GOTOOLCHAIN=local
+        releasekit_host_os=$(go env GOHOSTOS) || exit $?
+        releasekit_host_arch=$(go env GOHOSTARCH) || exit $?
+        export GOOS="$${releasekit_host_os}" GOARCH="$${releasekit_host_arch}"
         go build -mod=readonly -o "$${bootstrap_dir}/releasekit" ./cmd/releasekit
         "$${bootstrap_dir}/releasekit" ci-deliver \
           --repo "$${CI_WORKSPACE}" \