Output of a “git pull” what does this change mean?

Question

I never understand the change output to the screen can someone please give me the following meaning of the follownig change in dummy terms

**Fast-forward
 build.number       |    4 ++--**

Answer 1

It appears that you have file called build.number in your git repository, and somebody else has changed that file upstream.

Fast-forward means when you ran git pull to get changes, your tree was untouched - you did not do any commits of your own, and thus git pull was able to update your repository without necessity to do any merges. It simply set your local branch pointer to be exactly the same as on server - this is exactly what fast-forward means.