HEAD request inexplicably failing

A HEAD request to this [website](https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr) is inexplicably giving `RemoteDisconnected`. A GET request to the same URL succeeds. Issuing a HEAD request using `curl --head https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr` also succeeds.

## Expected Result

No error.

## Actual Result

```pytb
---------------------------------------------------------------------------
RemoteDisconnected                        Traceback (most recent call last)
~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in urlopen(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)
    669             # Make the request on the httplib connection object.
--> 670             httplib_response = self._make_request(
    671                 conn,

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in _make_request(self, conn, method, url, timeout, chunked, **httplib_request_kw)
    425                     # Otherwise it looks like a bug in the code.
--> 426                     six.raise_from(e, None)
    427         except (SocketTimeout, BaseSSLError, SocketError) as e:

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/packages/six.py in raise_from(value, from_value)

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in _make_request(self, conn, method, url, timeout, chunked, **httplib_request_kw)
    420                 try:
--> 421                     httplib_response = conn.getresponse()
    422                 except BaseException as e:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in getresponse(self)
   1346             try:
-> 1347                 response.begin()
   1348             except ConnectionError:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in begin(self)
    306         while True:
--> 307             version, status, reason = self._read_status()
    308             if status != CONTINUE:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in _read_status(self)
    275             # sending a valid response.
--> 276             raise RemoteDisconnected("Remote end closed connection without"
    277                                      " response")

RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

ProtocolError                             Traceback (most recent call last)
~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/adapters.py in send(self, request, stream, timeout, verify, cert, proxies)
    438             if not chunked:
--> 439                 resp = conn.urlopen(
    440                     method=request.method,

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in urlopen(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)
    725 
--> 726             retries = retries.increment(
    727                 method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/util/retry.py in increment(self, method, url, response, error, _pool, _stacktrace)
    402             if read is False or not self._is_method_retryable(method):
--> 403                 raise six.reraise(type(error), error, _stacktrace)
    404             elif read is not None:

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/packages/six.py in reraise(tp, value, tb)
    733             if value.__traceback__ is not tb:
--> 734                 raise value.with_traceback(tb)
    735             raise value

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in urlopen(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)
    669             # Make the request on the httplib connection object.
--> 670             httplib_response = self._make_request(
    671                 conn,

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in _make_request(self, conn, method, url, timeout, chunked, **httplib_request_kw)
    425                     # Otherwise it looks like a bug in the code.
--> 426                     six.raise_from(e, None)
    427         except (SocketTimeout, BaseSSLError, SocketError) as e:

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/packages/six.py in raise_from(value, from_value)

~/miniconda3/envs/py38/lib/python3.8/site-packages/urllib3/connectionpool.py in _make_request(self, conn, method, url, timeout, chunked, **httplib_request_kw)
    420                 try:
--> 421                     httplib_response = conn.getresponse()
    422                 except BaseException as e:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in getresponse(self)
   1346             try:
-> 1347                 response.begin()
   1348             except ConnectionError:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in begin(self)
    306         while True:
--> 307             version, status, reason = self._read_status()
    308             if status != CONTINUE:

~/miniconda3/envs/py38/lib/python3.8/http/client.py in _read_status(self)
    275             # sending a valid response.
--> 276             raise RemoteDisconnected("Remote end closed connection without"
    277                                      " response")

ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

During handling of the above exception, another exception occurred:

ConnectionError                           Traceback (most recent call last)
<ipython-input-3-6743eb250be3> in <module>
      1 import requests
      2 
----> 3 resp = requests.head('https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr' class="ansi-blue-fg">)

~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/api.py in head(url, **kwargs)
    102 
    103     kwargs.setdefault('allow_redirects', False)
--> 104     return request('head', url, **kwargs)
    105 
    106 

~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/api.py in request(method, url, **kwargs)
     59     # cases, and look like a memory leak in others.
     60     with sessions.Session() as session:
---> 61         return session.request(method=method, url=url, **kwargs)
     62 
     63 

~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/sessions.py in request(self, method, url, params, data, headers, cookies, files, auth, timeout, allow_redirects, proxies, hooks, stream, verify, cert, json)
    528         }
    529         send_kwargs.update(settings)
--> 530         resp = self.send(prep, **send_kwargs)
    531 
    532         return resp

~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/sessions.py in send(self, request, **kwargs)
    641 
    642         # Send the request
--> 643         r = adapter.send(request, **kwargs)
    644 
    645         # Total elapsed time of the request (approximately)

~/miniconda3/envs/py38/lib/python3.8/site-packages/requests/adapters.py in send(self, request, stream, timeout, verify, cert, proxies)
    496 
    497         except (ProtocolError, socket.error) as err:
--> 498             raise ConnectionError(err, request=request)
    499 
    500         except MaxRetryError as e:

ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))
```
## Reproduction Steps

```python
import requests
requests.head('https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr')
```

## System Information

    $ python -m requests.help

```
{
  "chardet": {
    "version": "3.0.4"
  },
  "cryptography": {
    "version": "3.0"
  },
  "idna": {
    "version": "2.10"
  },
  "implementation": {
    "name": "CPython",
    "version": "3.8.5"
  },
  "platform": {
    "release": "19.6.0",
    "system": "Darwin"
  },
  "pyOpenSSL": {
    "openssl_version": "1010107f",
    "version": "19.1.0"
  },
  "requests": {
    "version": "2.24.0"
  },
  "system_ssl": {
    "version": "1010107f"
  },
  "urllib3": {
    "version": "1.25.10"
  },
  "using_pyopenssl": true
}
```

This command is only available on Requests v2.16.4 and greater. Otherwise,
please provide some basic information about your system (Python version,
operating system, &c).


So the problem is the headers that requests is sending. I can make things work just fine using `http.client.HTTPSConnection` from the stdlib. This works:
```python
from contextlib import closing
from http.client import HTTPSConnection

with closing(HTTPSConnection('www.ncdc.noaa.gov')) as conn:
    conn.request('HEAD', '/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr')
    conn.getresponse()
```
This one, using the headers that requests was sending for the HEAD request fails:
```python
with closing(HTTPSConnection('www.ncdc.noaa.gov')) as conn:
    conn.request('HEAD', '/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr',
                 headers={'User-Agent': 'python-requests/2.24.0',
                          'Accept': '*/*',
                          'Connection': 'keep-alive'})
    conn.getresponse()
```
Removing 'Accept-Encoding: gzip, deflate' works:
```python
with closing(HTTPSConnection('www.ncdc.noaa.gov')) as conn:
    conn.request('HEAD', '/data-access/model-data/model-datasets/north-american-regional-reanalysis-narr',
                 headers={'User-Agent': 'python-requests/2.24.0',
                          'Accept': '*/*',
                          'Connection': 'keep-alive'})
    conn.getresponse()
```

To be clear, this isn't a bug in Requests, this is a problem with how the server responds to unexpected input (closing the socket without sending data).

Fair enough. I wasn't sure about that initially, but the last post makes that reasonable to me.