In this level we are asked to clone a git repo with git clone ssh://bandit30-git@localhost:2220/home/bandit30-git/repo to find the password.
Looking in the README file we see that it is "just an empty file"
Looking at git log we see that there are no previous versions of this file to look at.
We can also run git branch to see that there are also no other branches.
There is one more object in git that we have yet to encounter in bandit, that being the git tag. A git tag is basically a name assigned to another object. These can be listed with git tag -l. Running this command shows us that there is a tag called secret. We can see what the tag points at by running git show.
git show secret
This reveals the password: OoffzGDlzhAlerFJ2cAiz1D41JW1Mhmt