RPM-Sync complains about wrong checksums for SLES12 repo

Hello everyone,

we try to mirror 
https://download.postgresql.org/pub/repos/zypp/12/suse/sles-12.5-x86_64/ 
using Uyuni (open source base for SUSE Manager) as a local repo 
management system. Uyuni complains about wrong checksums which is 
absolutly correct: the metadata in the repodata folder has different 
checksums for some files.

In the logs we get those mismatches:

02:36:38 (50, 'checksums did not match 
9bc3f2bf784fbfdb504d2a01292dd116ca6423dd95ca0a7cfe3f5d495cabe978 vs 
ea9d497c796047cef0ad81f80fefa307b769f1449319717836c9544dcf32a629', 
'Invalid information uploaded to the server')
02:36:38 (50, 'checksums did not match 
686b9d5ea868ab37cf81c978ec388d898d9586c50c3dec06a16709125166dcbc vs 
4cfddab7d622769d0b830d5a782ca6d3c17dbc70263203d991e2e70e801d5d75', 
'Invalid information uploaded to the server')
02:36:38 (50, 'checksums did not match 
b39ece9486859e743522644de01d18c069179aeaa4ded4bf5d1d181cdf81cbcf vs 
2abb50b065698c72486615263b7480beb710ee23e96d43b875c5c8f3e4d24aae', 
'Invalid information uploaded to the server')
02:36:38 (50, 'checksums did not match 
54d8968568b5e35b9423fd7fb297cb8cec8aab090696bea05f8d544a68e21129 vs 
cbe08d8eb74b8eec9548d27a3c6cac4ee1c225857a91422e21696fbdf251010b', 
'Invalid information uploaded to the server')


ea9d497c796047cef0ad81f80fefa307b769f1449319717836c9544dcf32a629 is the 
current checksum of powa_12-4.1.2-4.sles12.x86_64.rpm

4cfddab7d622769d0b830d5a782ca6d3c17dbc70263203d991e2e70e801d5d75 is the 
current checksum of repmgr_12-5.3.3-1.sles12.x86_64.rpm

cbe08d8eb74b8eec9548d27a3c6cac4ee1c225857a91422e21696fbdf251010b is the 
current checksum of repmgr_12-llvmjit-5.3.3-1.sles12.x86_64.rpm

2abb50b065698c72486615263b7480beb710ee23e96d43b875c5c8f3e4d24aae is the 
current checksum of repmgr_12-devel-5.3.3-1.sles12.x86_64.rpm
Which surprisingly is an empty rpm (just metadata). As is 
repmgr_12-devel-5.3.3-2.sles12.x86_64.rpm or 
repmgr_12-devel-5.4.0-1.sles12.x86_64.rpm. So maybe not containing any 
file is correct.

I'm not sure if this is the correct list to address this issue. If it is 
- can someone from the infrastructure team check what is wrong here: do 
we have wrong metadata or wrong packages in this repository?

It is noticable that most of the rpm files with a wrong checksum have a 
timestamp of 04-Jan-2023 21:51 (powa being the exception).

Thank you,

   Stefan