Pulling Labels in GitLog

Question

I have to gather commits in Github for auditing purposes. I'm trying to pull commits and merges with Gitlog that are under a specific label, but I'm not able to filter by labels. I thought this was what tags was for, but I seem to be mistaken.

In GitHub I would search

is:pr is:closed sort:created-desc closed:2021-01-01..2022-01-01 label:changes 

So I tried

git log --branches --tags='changes' --merges --remotes --full-history --dense --since=2021-01-01 --date-order --format='%ai %an <%ae> %h %f' --output=/Users/Downloads/list4.csv

It returns a CSV file with the commit, hash, date, and summary. When I check the hash and look at the commit, it's not pulling up the ones under the 'changes' label like the GitHub query... What am I missing? Thanks!

I also read this documentation Gitlog documentation and it didn't seem to answer my question or I'm just dumb