403 forbidden while downloading libraries

[MagicJinn]

Cleanroom Relauncher has trouble getting certain libraries:
https://mclo.gs/KRVAU71
Even though my machine is able to reach them just fine.
Pasting the following URL into the adress bar downloads the file without problems: https://repo.maven.apache.org/maven2/io/netty/netty-codec-base/4.2.6.Final/netty-codec-base-4.2.6.Final.jar
I'm not entirely sure why.

CMD curl:
curl -I https://repo.maven.apache.org/maven2/io/netty/netty-codec-base/4.2.6.Final/netty-codec-base-4.2.6.Final.jar

HTTP/1.1 200 OK
Date: Tue, 30 Sep 2025 17:34:49 GMT
Content-Type: application/java-archive
Content-Length: 152980
Connection: keep-alive
Server: cloudflare
CF-Ray: 98757925bcdc0b88-AMS
CF-Cache-Status: HIT
Accept-Ranges: bytes
Age: 150554
ETag: "4183bd49b895454e4059baa92e776b77"
Last-Modified: Mon, 08 Sep 2025  9:05:21 GMT
Vary: Accept-Encoding
X-Checksum-MD5: 4183bd49b895454e4059baa92e776b77
X-Checksum-SHA1: fd6ff9613696f99857daeca37d4cfed22b1eb69e

Powershell Invoke-WebRequest:
Invoke-WebRequest -Uri "https://repo.maven.apache.org/maven2/io/netty/netty-codec-base/4.2.6.Final/netty-codec-base-4.2.6.Final.jar" -Method Head

StatusCode        : 200
StatusDescription : OK
Content           : {}
RawContent        : HTTP/1.1 200 OK
                    Date: Tue, 30 Sep 2025 17:35:02 GMT
                    Connection: keep-alive
                    Server: cloudflare
                    CF-Ray: 9875797a6b87b6a8-AMS
                    CF-Cache-Status: HIT
                    Accept-Ranges: bytes
                    Age: 150567
                    ETag: "4183bd49…
Headers           : {[Date, System.String[]], [Connection, System.String[]], [Server, System.String[]], [CF-Ray,
                    System.String[]]…}
RawContentLength  : 0
RelationLink      : {}

[MagicJinn]

Also happens in latest beta:
https://mclo.gs/oHDsHSF