Git rm/mv of identical files

Git can do weird things with identical files. I had four files with the exact same content in a code directory:

20200519.sql
20200521.sql
20200526.sql
20200528.sql

I ran the following commands in order:

git rm 20200519.sql
git mv 20200521.sql 20200521_updates.sql
git mv 20200526.sql 20200526_updates.sql
git mv 20200528.sql 20200528_updates.sql

Git says that it actually did the following:

Rename 20200519.sql -> 20200521_updates.sql
Rename 20200521.sql -> 20200526_updates.sql
Rename 20200526.sql -> 20200528_updates.sql
Delete 20200528.sql