nix: hack fix for missing git and version script

nix/status-go/mobile/build.nix

@@ -1,6 +1,6 @@
 { callPackage, lib, buildGoPackage
 , androidPkgs, openjdk, gomobile, xcodeWrapper, removeReferencesTo
-, go-bindata, mockgen, protobuf3_20, protoc-gen-go
+, go-bindata, mockgen, protobuf3_20, protoc-gen-go, git
 , meta
 , source
 , platform ? "android"
@@ -29,7 +29,7 @@ in buildGoPackage rec {
 
   extraSrcPaths = [ gomobile ];
   nativeBuildInputs = [
-    gomobile removeReferencesTo go-bindata mockgen protoc-gen-go protobuf3_20
+    gomobile removeReferencesTo go-bindata mockgen protoc-gen-go protobuf3_20 git
   ] ++ optional isAndroid openjdk
     ++ optional isIOS xcodeWrapper;
 
@@ -50,12 +50,27 @@ in buildGoPackage rec {
   SENTRY_CONTEXT_NAME = "status-mobile";
   SENTRY_CONTEXT_VERSION = version;
 
-  preBuild = ''
-    echo 'Generate static files'
-    pushd go/src/$goPackagePath
-    make generate SHELL=$SHELL GO111MODULE=on GO_GENERATE_CMD='go generate'
-    popd
-  '';
+   preBuild = ''
+     # To fix fatal: not a git repository (or any of the parent directories): .git
+     git init --quiet --initial-branch=main .
+     git config user.email "nix@builder"
+     git config user.name "Nix Builder"
+     git commit --quiet --allow-empty -m "Initial commit"
+     git tag -a "v${source.cleanVersion}" -m "Version ${source.cleanVersion}"
+
+     # To fix sh: line 1: ../../_assets/scripts/version.sh: cannot execute: required file not found
+     mkdir -p go/src/github.com/status-im/status-go/_assets/scripts
+     cat > go/src/github.com/status-im/status-go/_assets/scripts/version.sh <<EOF
+     #!/usr/bin/env bash
+     echo "${source.version}"
+     EOF
+     chmod +x go/src/github.com/status-im/status-go/_assets/scripts/version.sh
+
+     echo 'Generate static files'
+     pushd go/src/$goPackagePath
+     make generate SHELL=$SHELL GO111MODULE=on GO_GENERATE_CMD='go generate'
+     popd
+   '';
 
   buildPhase = ''
     runHook preBuild