1 files changed, 4 insertions, 4 deletions

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 6c92427704..38c886b21b 100644
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -321,8 +321,8 @@ do_validate_branches() {
                 fi
         fi
 
-        ref=`git show ${machine_srcrev} 2>&1 | head -n1 || true`
-        if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
+        git cat-file -t ${machine_srcrev} > /dev/null
+        if [ if $? -ne 0 ]; then
             echo "ERROR ${machine_srcrev} is not a valid commit ID."
             echo "The kernel source tree may be out of sync"
             exit 1
@@ -358,8 +358,8 @@ do_validate_branches() {
         git show-ref --quiet --verify -- "refs/heads/${KMETA}"
         if [ $? -eq 0 ] && [ "${target_meta_head}" != "AUTOINC" ]; then
                 if [ "$meta_head" != "$target_meta_head" ]; then
-                        ref=`git show ${target_meta_head} 2>&1 | head -n1 || true`
-                        if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
+                        git cat-file -t ${target_meta_head} > /dev/null
+                        if [ $? -ne 0 ]; then
                                 echo "ERROR ${target_meta_head} is not a valid commit ID"
                                 echo "The kernel source tree may be out of sync"
                                 exit 1