user:tmp user$ mkdir test
user:tmp user$ cd test/
user:test user$ git init
Initialized empty Git repository in /private/tmp/test/.git/
user:test user$ echo "First Record" >> 1
user:test user$ git add .
user:test user$ git commit -m "First commit"
[master (root-commit) ee9bf3b] First commit
 1 file changed, 1 insertion(+)
 create mode 100644 1
user:test user$ git log
commit ee9bf3b4c802386da037862ae35821147de10030
Author: --- <--->
Date:   Fri Dec 8 18:26:13 2017 +0300

    First commit
user:test user$ git checkout -b new_branch
Switched to a new branch 'new_branch'
user:test user$ echo "Another Record" >> 1
user:test user$ git add 1
user:test user$ git commit -m "Second commit"
[new_branch 552372d] Second commit
 1 file changed, 1 insertion(+), 1 deletion(-)
user:test user$ git checkout master
Switched to branch 'master'
user:test user$ git merge new_branch
Updating ee9bf3b..552372d
Fast-forward
 1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
user:test user$ git log
commit 552372d6087193e8021ada8cef18f738c953c51b
Author: --- <--->
Date:   Fri Dec 8 18:27:27 2017 +0300

    Second commit

commit ee9bf3b4c802386da037862ae35821147de10030
Author: --- <--->
Date:   Fri Dec 8 18:26:13 2017 +0300

    First commit
user:test user$ cat 1
Another record