From c678b73675e1d2bf3be6042bed920e27d3d62490 Mon Sep 17 00:00:00 2001
From: Sebastian Wilzbach <seb@wilzba.ch>
Date: Mon, 13 Aug 2018 18:03:14 +0200
Subject: [PATCH] Fix Semaphore stable branch detection

---
 semaphoreci.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/semaphoreci.sh b/semaphoreci.sh
index 50c94948148d..a209005f86eb 100755
--- a/semaphoreci.sh
+++ b/semaphoreci.sh
@@ -19,8 +19,7 @@ export OS_NAME=linux
 export FULL_BUILD="${PULL_REQUEST_NUMBER+false}"
 # SemaphoreCI doesn't provide a convenient way to the base branch (e.g. master or stable)
 if [ -n "${PULL_REQUEST_NUMBER:-}" ]; then
-    # detect master/stable without querying the rate-limited API
-    BRANCH="$(git describe --all | sed -E "s/.*\/([^-/]*)-.*/\1/")"
+    BRANCH=$((curl -fsSL https://api.github.com/repos/dlang/dmd/pulls/$PULL_REQUEST_NUMBER || echo) | jq -r '.base.ref')
     # check if the detected branch actually exists and fallback to master
     if ! git ls-remote --exit-code --heads https://github.com/dlang/dmd.git "$BRANCH" > /dev/null ; then
         echo "Invalid branch detected: ${BRANCH} - falling back to master"