mc stat does not work on Backblaze B2

[vbmithr]

Expected behavior

Actual behavior

mcli: <DEBUG> HEAD /b2-snapshots-138dfd399600/bzsnapshot_2024-02-13-16-03-47.zip HTTP/1.1
Host: s3.us-west-004.backblazeb2.com
User-Agent: MinIO (linux; amd64) minio-go/v7.0.77 mcli/RELEASE.2024-10-08T09-37-26Z
Authorization: AWS4-HMAC-SHA256 Credential=004138dfd3996000000000002/20241029/us-west-004/s3/aws4_request, SignedHeaders=host;x-amz-checksum-mode;x-amz-content-sha256;x-amz-date, Signature=**REDACTED**
X-Amz-Checksum-Mode: ENABLED
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Date: 20241029T151958Z

mcli: <DEBUG> HTTP/1.1 400
Content-Length: 198
Cache-Control: max-age=0, no-cache, no-store
Connection: keep-alive
Content-Type: application/xml
Date: Tue, 29 Oct 2024 15:19:58 GMT
Server: nginx
Strict-Transport-Security: max-age=63072000
X-Amz-Id-2: aMc0zJDhdZM5mk2SoM0g53DmtNucw0jAj
X-Amz-Request-Id: ab140bf1721be666

mcli: <DEBUG> TLS Certificate found:
mcli: <DEBUG>  >> Country: US
mcli: <DEBUG>  >> Organization: Let's Encrypt
mcli: <DEBUG>  >> Expires: 2025-01-05 20:31:24 +0000 UTC
mcli: <DEBUG> TLS Certificate found:
mcli: <DEBUG>  >> Country: US
mcli: <DEBUG>  >> Organization: Internet Security Research Group
mcli: <DEBUG>  >> Expires: 2027-03-12 23:59:59 +0000 UTC
mcli: <DEBUG> Response Time:  151.134358ms

mcli: <ERROR> Unable to stat `b2/b2-snapshots-138dfd399600/`. 400
 (2) stat.go:350 cmd.statURL(..) Tags: [b2/b2-snapshots-138dfd399600/bzsnapshot_2024-02-13-16-03-47.zip]
 (1) client-url.go:217 cmd.url2Stat(..) Tags: [b2/b2-snapshots-138dfd399600/bzsnapshot_2024-02-13-16-03-47.zip]
 (0) client-s3.go:1725 cmd.(*S3Client).getObjectStat(..)
 Release-Tag:RELEASE.2024-10-08T09-37-26Z | Commit:cf128de2cf42 | Host:sita | OS:linux | Arch:amd64 | Lang:go1.23.2 | Mem:4.3 MiB/23 MiB | Heap:4.3 MiB/15 MiB.

Steps to reproduce the behavior

mc --version

• (paste output of mc --version)

RELEASE.2024-10-08T09-37-26Z

System information

Archlinux x86_64

[harshavardhana]

Ask Backblaze B2 to support checksum mode

[klauspost]

(or at least ignore it, which is the intended behavior)