Bug#1023811: golang-github-grpc-ecosystem-go-grpc-middleware_1.3.0-1 sources changed in the archive?

[Adrian Bunk <bunk@debian.org>]

Package: ftp.debian.org
Severity: grave
X-Debbugs-Cc: debian-wb-team@lists.debian.org, Thomas Goirand <zigo@debian.org>

https://buildd.debian.org/status/logs.php?pkg=golang-github-grpc-ecosystem-go-grpc-middleware&ver=1.3.0-1&arch=all&suite=experimental

The three Maybe-Failed until November 3rd at the bottom are normal FTBFS.

But the Maybe-Given-back since yesterday are:

...
Get:1 https://deb.debian.org/debian experimental/main golang-github-grpc-ecosystem-go-grpc-middleware 1.3.0-1 (dsc) [2857 B]
Err:1 https://deb.debian.org/debian experimental/main golang-github-grpc-ecosystem-go-grpc-middleware 1.3.0-1 (dsc)
  Hash Sum mismatch
  Hashes of expected file:
   - SHA256:8e86e0a9cc31461c0f564e8feefb2e1e9ec05c265ab06e96fd32b7de787bc504
   - Filesize:2857 [weak]
   - MD5Sum:c4d33ab09e4f4a95c819dd1de88d0876 [weak]
  Hashes of received file:
   - SHA256:8bbee530bbdb11a58a275c34878c372558223c294384897822eba1338b84db82
   - MD5Sum:8d6eee1b2b773c9be12536396ba949a6 [weak]
   - Filesize:2857 [weak]
  Last modification reported: Wed, 26 Oct 2022 14:32:16 +0000
Get:2 https://deb.debian.org/debian experimental/main golang-github-grpc-ecosystem-go-grpc-middleware 1.3.0-1 (tar) [104 kB]
Get:3 https://deb.debian.org/debian experimental/main golang-github-grpc-ecosystem-go-grpc-middleware 1.3.0-1 (diff) [2652 B]
E: Failed to fetch https://deb.debian.org/debian/pool/main/g/golang-github-grpc-ecosystem-go-grpc-middleware/golang-github-grpc-ecosystem-go-grpc-middleware_1.3.0-1.dsc  Hash Sum mismatch
   Hashes of expected file:
    - SHA256:8e86e0a9cc31461c0f564e8feefb2e1e9ec05c265ab06e96fd32b7de787bc504
    - Filesize:2857 [weak]
   Fetched 109 kB in 0s (416 kB/s)
 - MD5Sum:c4d33ab09e4f4a95c819dd1de88d0876 [weak]
   Hashes of received file:
    - SHA256:8bbee530bbdb11a58a275c34878c372558223c294384897822eba1338b84db82
    - MD5Sum:8d6eee1b2b773c9be12536396ba949a6 [weak]
    - Filesize:2857 [weak]
   Last modification reported: Wed, 26 Oct 2022 14:32:16 +0000
E: Failed to fetch some archives.
E: apt-get for sources failed
...


I can reproduce the problem locally with
$ apt-get source golang-github-grpc-ecosystem-go-grpc-middleware/experimental

This is not supposed to happen, and I haven't seen this before.