I found an example on how to delete a commit but it includes git log in the following format
Number Hash Commit Message Author
1 2c6a45b (HEAD) Adding public method to access protected method Tom
2 ae45fab Updates to database interface Contractor 1
3 77b9b82 Improving database interface Contractor 2
4 3c9093c Merged develop branch into master Tom
5 b3d92c5 Adding new Event CMS Module Paul
6 7feddbb Adding CMS class and files Tom
7 a809379 Adding project to Git Tom
When I issue the git log command I'm getting log in another format and without the numbers (which are required by the task).
How to get git log with numbers?
You could combine the nl command with git log --oneline to enumerate output lines. It's far from ideal but if you are just looking for the line numbers:
$ git log --oneline | nl
1 91236f3 Message
2 a611069 Message
3 f2813e7 Message
4 01b59e4 Message
5 2343455 Message