diff --git a/.github/scripts/install-prereq.sh b/.github/scripts/install-prereq.sh
index 2bdbeb65a..98f1db5c6 100755
--- a/.github/scripts/install-prereq.sh
+++ b/.github/scripts/install-prereq.sh
@@ -26,7 +26,7 @@ fi
 if [ "$X11_OS" = "Darwin" ]; then
 build_ac      xset              https://gitlab.freedesktop.org/xorg/app/xset             xset-1.2.5
 fi
-build_ac_xts  xts               https://gitlab.freedesktop.org/xorg/test/xts             master # dbbfa96c036e596346147081cbceda136e7c86c1
+build_ac_xts  xts               https://gitlab.freedesktop.org/xorg/test/xts             12a887c2c72c4258962b56ced7b0aec782f1ffed # master @ 2025-02-11
 
 clone_source piglit             https://gitlab.freedesktop.org/mesa/piglit               main # 265896c86f90cb72e8f218ba6a3617fca8b9a1e3
 
diff --git a/.github/scripts/util.sh b/.github/scripts/util.sh
index cd74de195..669b7bb4f 100644
--- a/.github/scripts/util.sh
+++ b/.github/scripts/util.sh
@@ -8,7 +8,12 @@ clone_source() {
 
     if [ ! -f $pkgname/.git/config ]; then
         echo "need to clone $pkgname"
-        git clone $url $pkgname --branch=$ref --depth 1
+        # Using multiple commands to support revisions in $ref
+        # TODO: Switch to `git clone --revision=$ref ...` when using Git 2.49+
+        git init $pkgname
+        git -C $pkgname remote add origin $url
+        git -C $pkgname fetch origin $ref --depth 1
+        git -C $pkgname checkout FETCH_HEAD
     else
         echo "already cloned $pkgname"
     fi