Specifying a location for a hasher BoltDB?

I am trying to learn using rclone to sync media files between myself and a friend for backup purposes. I have been using Gemini to try to pin down exactly what I am trying to do, and I believe it's hallucinating advice. I have read through the hasher manual, but don't see anything that says it can be explicitly defined. My goal is to be able to do this through scripts without having a specific rclone config.

What is the problem you are having with rclone?

The problem I have is I cannot seem to specify a location where I want to create a local boltdb for Hasher. It appears to always use ~/.cache/rclone/kv/local~hasher.bolt

Run the command 'rclone version' and share the full output of the command.

rclone v1.74.4
- os/version: cachyos (64 bit)
- os/kernel: 7.1.3-2-cachyos (x86_64)
- os/type: linux
- os/arch: amd64
- go/version: go1.26.5-X:nodwarf5
- go/linking: dynamic
- go/tags: none

Which cloud storage system are you using? (eg Google Drive)

local and peer-to-peer

The command you were trying to run (eg rclone copy /tmp remote:tmp)

rclone hashsum md5 :hasher,remote="/mnt/media",hashes="md5",max_age="off": --hasher-db-path="~/mydb.bolt" --exclude "*.jpg" --exclude "*.png"

rclone hashsum md5 :hasher,remote="/mnt/media",hashes="md5",max_age="off",db_path="~/mydb.bolt": --exclude "*.jpg" --exclude "*.png"

rclone hashsum md5 :hasher,remote="/mnt/media",hashes="md5",max_age="off",db_path="/home/user/mydb.bolt": --exclude "*.jpg" --exclude "*.png"

RCLONE_HASHER_DB_PATH="/home/user/mydb.bolt" rclone hashsum md5 :hasher,remote="/mnt/media",hashes="md5",max_age="off": --exclude "*.jpg" --exclude "*.png"

Please run 'rclone config redacted' and share the full output. If you get command not found, please make sure to update rclone.

empty config - I am trying to set up a no-config script for portability

A log from the command that you were trying to run with the -vv flag

I don't think I need a log for this, as it is more of a general how to.  Let me know if you want me to run a log anyway.