cibuild.sh: make sure git log print out the last commit

Add 'git log -1' to make sure we know where the last commit is.

Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
diff --git a/cibuild.sh b/cibuild.sh
index f6dc1d1..9c2953a 100755
--- a/cibuild.sh
+++ b/cibuild.sh
@@ -157,13 +157,17 @@
     cd $nuttx; git pull
   else
     git clone https://github.com/apache/incubator-nuttx.git $nuttx
+    cd $nuttx
   fi
+  git log -1
 
   if [ -d "$apps" ]; then
     cd $apps; git pull
   else
     git clone https://github.com/apache/incubator-nuttx-apps.git $apps
+    cd $apps
   fi
+  git log -1
   popd
 }