Having trouble cloning over HTTPS, getting HTTP Error 417, using Gunicorn

[LHP]

Hello list,

I've been trying to resolve this for the past few days and the only 
remedy was to enable ssh. This isn't a lasting solution as in some 
cases, depending on network,  only ports 80,443 are available. Here's 
the tcpdump:

POST /xxxxxxxxx/Scripts/git-upload-pack HTTP/1.1 Host: xxxxxxxxxxxx 
X-Host: xxxxxxxxxxxxx X-Real-IP: 10.0.9.9 X-Forwarded-For: xxxxxxxxxx, 
10.0.9.9 X-Forwarded-Proto: https Proxy-host: 127.0.0.1:5000 
X-Url-Scheme: https Connection: close Content-Length: 180 authorization: 
Basic c2VydmVyczpqRDg5QWNpQlNtNW0mVA== user-agent: git/2.28.0 
accept-encoding: deflate, gzip content-type: 
application/x-git-upload-pack-request accept: 
application/x-git-upload-pack-result 00a4want 
2500470a1a1820ff8c10632864d9a2a207968759 multi_ack_detailed no-done 
side-band-64k thin-pack include-tag ofs-delta deepen-since deepen-not 
agent=git/2.28.0 000cdeepen 20000HTTP/1.1 417 Expectation Failed Server: 
gunicorn/20.0.4 Date: Mon, 25 Jan 2021 04:48:54 GMT Connection: close 
Content-Length: 48 Content-Type: text/plain; charset=UTF-8 417 
Expectation Failed Expectation failed.

Gunicorn logs, with loglevel debug:

Jan 25 04:47:22 kallithea-server daemon.debug gunicorn.kallithea.error: 
[23679] GET /xxxxxxxxxxxxxx/Scripts/info/refs Jan 25 04:47:22 
kallithea-server daemon.info gunicorn.kallithea.access: [23679] 
127.0.0.1 - - [25/Jan/2021:04:47:22 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 401 
436 "-" "git/2.28.0" Jan 25 04:47:23 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23679] GET /xxxxxxxxxxxxxx/Scripts/info/refs 
Jan 25 04:47:23 kallithea-server daemon.info gunicorn.kallithea.access: 
[23679] 127.0.0.1 - lhorace [25/Jan/2021:04:47:23 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 401 
436 "-" "git/2.28.0" Jan 25 04:48:52 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23679] GET /xxxxxxxxxxxxxx/Scripts/info/refs 
Jan 25 04:48:52 kallithea-server daemon.info gunicorn.kallithea.access: 
[23679] 127.0.0.1 - - [25/Jan/2021:04:48:52 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 401 
436 "-" "git/2.28.0" Jan 25 04:48:52 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23676] GET /xxxxxxxxxxxxxx/Scripts/info/refs 
Jan 25 04:48:53 kallithea-server daemon.info gunicorn.kallithea.access: 
[23676] 127.0.0.1 - servers [25/Jan/2021:04:48:53 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 200 
351 "-" "git/2.28.0" Jan 25 04:48:54 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23678] POST 
/xxxxxxxxxxxxxx/Scripts/git-upload-pack Jan 25 04:48:54 kallithea-server 
daemon.info gunicorn.kallithea.access: [23678] 127.0.0.1 - servers 
[25/Jan/2021:04:48:54 +0000] "POST 
/xxxxxxxxxxxxxx/Scripts/git-upload-pack HTTP/1.1" 417 48 "-" 
"git/2.28.0" Jan 25 04:49:31 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23678] GET /xxxxxxxxxxxxxx/Scripts/info/refs 
Jan 25 04:49:31 kallithea-server daemon.info gunicorn.kallithea.access: 
[23678] 127.0.0.1 - - [25/Jan/2021:04:49:31 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 401 
436 "-" "git/2.28.0" Jan 25 04:49:32 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23676] GET /xxxxxxxxxxxxxx/Scripts/info/refs 
Jan 25 04:49:33 kallithea-server daemon.info gunicorn.kallithea.access: 
[23676] 127.0.0.1 - servers [25/Jan/2021:04:49:33 +0000] "GET 
/xxxxxxxxxxxxxx/Scripts/info/refs?service=git-upload-pack HTTP/1.1" 200 
351 "-" "git/2.28.0" Jan 25 04:49:33 kallithea-server daemon.debug 
gunicorn.kallithea.error: [23678] POST 
/xxxxxxxxxxxxxx/Scripts/git-upload-pack Jan 25 04:49:34 kallithea-server 
daemon.info gunicorn.kallithea.access: [23678] 127.0.0.1 - servers 
[25/Jan/2021:04:49:34 +0000] "POST 
/xxxxxxxxxxxxxx/Scripts/git-upload-pack HTTP/1.1" 417 48 "-" "git/2.28.0"

Git arguments:

git clone --depth 2 https://xxxxxxx:xxxxx@xxxxxxx/xxxxxxx/Scripts

Is there a separate log file I can enable and take a look at, to try to 
determine why this is failing here?

Best Regards.