diff --git a/.github/workflows/build-submit-ios.yml b/.github/workflows/build-submit-ios.yml
index 6fa8c2ba66..6b0af202f5 100644
--- a/.github/workflows/build-submit-ios.yml
+++ b/.github/workflows/build-submit-ios.yml
@@ -292,6 +292,7 @@ jobs:
           APP_VERSION: ${{ needs.build.outputs.package-version }}
           BUILD_NUMBER: ${{ needs.build.outputs.build-number }}
           BRANCH_NAME: ${{ github.ref_name }}
+          COMMIT_SHA: ${{ github.sha }}
         run: |
           # Ensure the API key material is removed even if fastlane exits non-zero
           # (the step runs under `bash -e`, which would otherwise abort before cleanup).
@@ -307,7 +308,8 @@ jobs:
             > asc_api_key.json
           # app_platform is required in non-interactive mode: distribute_only otherwise
           # calls fetch_app_platform, which prompts for input and crashes without a TTY.
-          SHORT_SHA="$(git rev-parse --short HEAD)"
+
+          SHORT_SHA="${COMMIT_SHA:0:7}"
           fastlane run upload_to_testflight \
             api_key_path:"$PWD/asc_api_key.json" \
             distribute_only:true \