ISSUE-9: Instead of 'main', checkout the current branch in the pipeline

Author: AFulgens

.github/workflows/main.yml

@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     name: Run tests on lowest supported Python version on Ubuntu as a sanity-check before doing anything else
     steps:
-    - name: Checkout main branch
+    - name: Checkout current branch
       uses: actions/checkout@v4
       with:
-        ref: main
+        ref: ${{ github.ref_name }}
     - uses: actions/setup-python@v5
       with:
         python-version: '3.9'
@@ -27,10 +27,10 @@ jobs:
     name: Run all tests, run static type analysis, coverage, and mutation tests
     needs: sanity-run
     steps:
-    - name: Checkout main branch
+    - name: Checkout current branch
       uses: actions/checkout@v4
       with:
-        ref: main
+        ref: ${{ github.ref_name }}
     - uses: actions/setup-python@v5
       with:
         python-version: '3.12'
@@ -56,10 +56,10 @@ jobs:
           - os: ubuntu-latest
             env: '3.12'
     steps:
-    - name: Checkout main branch
+    - name: Checkout current branch
       uses: actions/checkout@v4
       with:
-        ref: main
+        ref: ${{ github.ref_name }}
     - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.env }}