feat: add git source support (#334)

* try to add git source support

* improve GIT_SOURCE output name

* fix syntax

---------

Co-authored-by: Bartek Pacia <barpac02@gmail.com>

.github/workflows/workflow.yaml

@@ -27,9 +27,16 @@ jobs:
     strategy:
       matrix:
         operating-system:
-          [ubuntu-latest, windows-latest, macos-latest, macos-13]
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+          - macos-13
         channel: [stable, beta, master]
         dry-run: [true, false]
+        git-source:
+          - https://github.com/flutter/flutter.git
+          - https://github.com/Flutter-Foundation/flutter.git
+          - https://gitee.com/harmonycommando_flutter/flutter.git
         include:
           - operating-system: ubuntu-latest
             channel: main
@@ -42,6 +49,7 @@ jobs:
         with:
           channel: ${{ matrix.channel }}
           dry-run: ${{ matrix.dry-run }}
+          git-source: ${{ matrix.git-source }}
       - name: Echo outputs
         run: |
           echo RUNNER-OS=${{ runner.os }}