I got the structure of the code but did not get every details right

Revision:
3:d5c746840139
Parent:
1:31f0f53b08bd
Child:
4:72b8fb7423dd
--- a/mbed-os.lib	Thu Feb 22 17:05:45 2018 +0000
+++ b/mbed-os.lib	Wed Jan 30 21:54:03 2019 +0000
@@ -1,1 +1,1 @@
-https://github.com/armmbed/mbed-os/#caeaa49d68c67ee00275cece10cd88e0ed0f6ed3
+https://github.com/armmbed/mbed-os/#a8f0c33eaa2c52babff9655417c36f4b5edd54d7