How to push a directory in a project, to a diferent existing repository (from the project repository, and the directory is included in .gitignore)

git_example_1.cmd

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\codevscode\portfolio_pwa>flutter clean
Deleting build...                                                    4ms

C:\codevscode\portfolio_pwa>git remote -v
origin  https://github.com/lbarqueira/portfolio_pwa.git (fetch)
origin  https://github.com/lbarqueira/portfolio_pwa.git (push)

C:\codevscode\portfolio_pwa>flutter build web
Running "flutter pub get" in portfolio_pwa...                       0,7s
Compiling lib\main.dart for the Web...                             44,1s

C:\codevscode\portfolio_pwa>cd build

C:\codevscode\portfolio_pwa\build>cd web

C:\codevscode\portfolio_pwa\build\web>git remote -v
origin  https://github.com/lbarqueira/portfolio_pwa.git (fetch)
origin  https://github.com/lbarqueira/portfolio_pwa.git (push)

C:\codevscode\portfolio_pwa\build\web>git init
Initialized empty Git repository in C:/codevscode/portfolio_pwa/build/web/.git/

C:\codevscode\portfolio_pwa\build\web>git add .
warning: LF will be replaced by CRLF in assets/NOTICES.
The file will have its original line endings in your working directory
warning: LF will be replaced by CRLF in flutter_service_worker.js.
The file will have its original line endings in your working directory
warning: LF will be replaced by CRLF in main.dart.js.
The file will have its original line endings in your working directory
warning: LF will be replaced by CRLF in main.dart.js.map.
The file will have its original line endings in your working directory

C:\codevscode\portfolio_pwa\build\web>git add .

C:\codevscode\portfolio_pwa\build\web>git remote -v

C:\codevscode\portfolio_pwa\build\web>git commit -m "new web build"
[master (root-commit) 4d85321] new web build
 36 files changed, 63853 insertions(+)
 create mode 100644 .last_build_id
 create mode 100644 assets/AssetManifest.json
 create mode 100644 assets/FontManifest.json
 create mode 100644 assets/NOTICES
 create mode 100644 assets/assets/images/background_image.jpg
 create mode 100644 assets/assets/images/lugh_happy.png
 create mode 100644 assets/assets/images/portfolio_image.jpg
 create mode 100644 assets/assets/images/qr_code.png
 create mode 100644 assets/fonts/MaterialIcons-Regular.otf
 create mode 100644 assets/fonts/Roboto-Regular.ttf
 create mode 100644 assets/packages/cupertino_icons/assets/CupertinoIcons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/AntDesign.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Entypo.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/EvilIcons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Feather.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/FontAwesome.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/FontAwesome5_Brands.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/FontAwesome5_Regular.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/FontAwesome5_Solid.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Foundation.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Ionicons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/MaterialCommunityIcons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/MaterialIcons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Octicons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/SimpleLineIcons.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/Zocial.ttf
 create mode 100644 assets/packages/flutter_icons/fonts/weathericons.ttf
 create mode 100644 favicon.png
 create mode 100644 flutter_service_worker.js
 create mode 100644 icons/Icon-192.png
 create mode 100644 icons/Icon-512.png
 create mode 100644 index.html
 create mode 100644 main.dart.js
 create mode 100644 main.dart.js.map
 create mode 100644 manifest.json
 create mode 100644 styles.css

C:\codevscode\portfolio_pwa\build\web>git remote add origin https://github.com/lbarqueira/lbarqueira.github.io.git

C:\codevscode\portfolio_pwa\build\web>git remote -v
origin  https://github.com/lbarqueira/lbarqueira.github.io.git (fetch)
origin  https://github.com/lbarqueira/lbarqueira.github.io.git (push)

C:\codevscode\portfolio_pwa\build\web>git push -f origin master
Enumerating objects: 48, done.
Counting objects: 100% (48/48), done.
Delta compression using up to 4 threads
Compressing objects: 100% (43/43), done.
Writing objects: 100% (48/48), 3.71 MiB | 2.29 MiB/s, done.
Total 48 (delta 1), reused 0 (delta 0), pack-reused 0
remote: Resolving deltas: 100% (1/1), done.
To https://github.com/lbarqueira/lbarqueira.github.io.git
 + 78d0691...4d85321 master -> master (forced update)

C:\codevscode\portfolio_pwa\build\web>