diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 370eb38f2..b285d129e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,6 +17,11 @@ jobs:
         # TODO: add windows matrix
         os: [macos-latest]
 
+    env:
+      REPO: ${{ github.event.pull_request.head.repo.full_name }}
+      BRANCH: ${{ github.event.pull_request.head.ref }}
+      SKIP_POETRY_SHELL: 1
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
@@ -28,13 +33,13 @@ jobs:
 
       - name: Run tests using the shell script (macOS compatible).
         if: matrix.os == 'macos-latest'
-        run: SKIP_POETRY_SHELL=1 sh install/install_openadapt.sh
+        run: sh install/install_openadapt.sh
 
       - name: Checkout code
         uses: actions/checkout@v3
         with:
-          ref: ${{ github.event.pull_request.head.ref }}
-          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ env.BRANCH }}
+          repository: ${{ env.REPO }}
 
       - name: Install poetry
         uses: snok/install-poetry@v1
diff --git a/install/install_openadapt.sh b/install/install_openadapt.sh
index 277a820cc..2986bc9ca 100644
--- a/install/install_openadapt.sh
+++ b/install/install_openadapt.sh
@@ -9,6 +9,9 @@ pythonCmd="python3.10"
 pythonVerStr="Python 3.10*"
 pythonInstallerLoc="https://www.python.org/ftp/python/3.10.11/python-3.10.11-macos11.pkg"
 
+# Construct the repository URL
+REPO_URL="https://github.com/$REPO"
+
 ################################ HELPER FUNCTIONS ################################
 
 # Remove OpenAdapt if it exists
@@ -121,9 +124,9 @@ fi
 CheckPythonExists
 
 [ -d "OpenAdapt" ] && mv OpenAdapt OpenAdapt-$(date +%Y-%m-%d_%H-%M-%S)
-RunAndCheck "git clone https://github.com/MLDSAI/OpenAdapt.git" "Clone git repo"
-
+RunAndCheck "git clone $REPO_URL" "Clone git repo"
 cd OpenAdapt
+RunAndCheck "git checkout $BRANCH" "Checkout branch $BRANCH"
 
 RunAndCheck "pip3.10 install poetry" "Install Poetry"
 RunAndCheck "poetry install" "Install Python dependencies"