How to switch a Storj repo from S3 to rclone access?

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After using kopia & storj via S3 for several years now successfully, I recently also hit the “ListObjects(V2): listing too many items for gateway-side filtering using arbitrary delimiter/prefix” limit.

I invested some time now trying to connect to my repo via rclone. I managed to connect rclone to Storj and can see my files. When I try to connect kopia, I geterror connecting to repository: repository not initialized in the provided storage

I found the –rclone-debug option:

> kopia repository connect rclone --remote-path=storj-kopia:kopia/ --rclone-exe=/usr/bin/rclone --log-level=debug --readonly --rclone-debug

generating new TLS certificate
adding alternative IP to certificate: 127.0.0.1
starting /usr/bin/rclone
detected webdav address: ``https://127.0.0.1:42879/`` RC: ``https://127.0.0.1:46521/``
Enter password to open repository:
[RCLONE] 2026/03/15 16:47:37 INFO : STATS:KOPIA 0 B / 0 B, -, 0 B/s, ETA -
[RCLONE] 2026/03/15 16:47:41 INFO : STATS:KOPIA 0 B / 0 B, -, 0 B/s, ETA -
[RCLONE] 2026/03/15 16:47:42 INFO : STATS:KOPIA 0 B / 0 B, -, 0 B/s, ETA -
[RCLONE] 2026/03/15 16:47:42 INFO : /.shards: 127.0.0.1:58966: Unauthorized request from
[RCLONE] 2026/03/15 16:47:46 INFO : STATS:KOPIA 0 B / 0 B, -, 0 B/s, ETA -
[RCLONE] 2026/03/15 16:47:46 INFO : //.shards: GET from 127.0.0.1:58976
[RCLONE] 2026/03/15 16:47:46 INFO : ``//kopia.repository.f``: GET from 127.0.0.1:58976
error connecting to repository: repository not initialized in the provided storage

> rclone size storj-kopia:kopia/kopia.repository Total objects: 1
Total size: 1.071 KiB (1097 Byte)
> rclone size storj-kopia:kopia/kopia.repository.f Total objects: 0
Total size: 0 B (0 Byte)

So it seems kopia is looking for kopia.repository.f, but in my repo there’s kopia.repository

> rclone cat storj-kopia:kopia/kopia.repository 
{ 
  "tool": "https://github.com/kopia/kopia", 
  "buildVersion": "0.12.1", 
  "buildInfo": "5227d74996b6520f9f96e4203cfe00b832a60d5f", 
  "uniqueID": "…", 
  "keyAlgo": "scrypt-65536-8-1", 
  "encryption": "AES256_GCM", 
  "encryptedBlockFormat": “…”
}

… so what should I try next?