Debug application performing transaction

I have an application to debug which performs a few dozen operations against a MySQL database. These operations are performed in a single transaction. I need to know the state of the database while debugging at a specific breakpoint. I can log into the MySQL service using the common mysql CLI tool. I see that a transaction in progress:

mysql> SELECT * FROM information_schema.innodb_trx\G
*************************** 1. row ***************************
                    trx_id: 325090
                 trx_state: RUNNING
               trx_started: 2022-09-14 12:10:32
     trx_requested_lock_id: NULL
          trx_wait_started: NULL
                trx_weight: 30
       trx_mysql_thread_id: 26
                 trx_query: NULL
       trx_operation_state: NULL
         trx_tables_in_use: 0
         trx_tables_locked: 10
          trx_lock_structs: 26
     trx_lock_memory_bytes: 1128
           trx_rows_locked: 43
         trx_rows_modified: 4
   trx_concurrency_tickets: 0
       trx_isolation_level: REPEATABLE READ
         trx_unique_checks: 1
    trx_foreign_key_checks: 1
trx_last_foreign_key_error: NULL
 trx_adaptive_hash_latched: 0
 trx_adaptive_hash_timeout: 0
          trx_is_read_only: 0
trx_autocommit_non_locking: 0
       trx_schedule_weight: NULL
1 row in set (0.01 sec)

## Now, how can I join that transaction to query the state of the database during the transaction? As a workaround, I could add a query to the application code. However that requires me to know which query I want to run before running the application, and then to recompile the app for each query I want to run. Having an open CLI to debug would be very helpful. The database is MySQL 8.0 running on Debian.