diff --git a/ci_scripts/ci_pre_xcodebuild.sh b/ci_scripts/ci_pre_xcodebuild.sh
index f926df3c0..273db6209 100755
--- a/ci_scripts/ci_pre_xcodebuild.sh
+++ b/ci_scripts/ci_pre_xcodebuild.sh
@@ -4,6 +4,8 @@ BASEDIR=$(dirname "$0")
 
 git=$(which git)
 
-"$git" -C "${BASEDIR}/.." fetch --tags
+REPO_ROOT_PATH=$("$git" rev-parse --show-toplevel)
+
+"$git" -C "$REPO_ROOT_PATH" fetch --unshallow --tags
 
 "${BASEDIR}/../Scripts/genversion.sh"