Glide downloaded image hash doesn't match

**Glide Version**: 4.11.0

**Integration libraries**: no libraries integrated

**Device/Android Version**: Oppo Reno

**Issue details / Repro steps / Use case background**: I need to download images from remote and check if the downloaded ones are correct. If they are, I need to cache them to reduce network connections in the next openings of the app.
Actually I managed to download an image as Bitmap, convert it into byte array and calculate its SHA256 hash but when I compare it to the hash of the same image calculated with an online service, for example this: https://emn178.github.io/online-tools/sha256_checksum.html the two hashes don't match.
The image that I'm testing with is this: http://www.starcoppe.it/images/grafica-immagine-s.jpg
The hash calculated with the online tool is 33dc0df4ee0397f6977a9b833c180f2a60504cb9da89c9b173807fcc2781284d
The hash calculated with my code is 24d23d798b53d02be5db008b038d191ddd4fdc7395bb10528bc373d6d0175627

The code listed below is from a sample project and, other than this code in the MainActivity, it is the default project.

**Glide load line / `GlideModule` (if any) / list Adapter code (if any)**:
```java
Glide.with(context.getApplicationContext())
.asBitmap()
.load(uri)
.listener(new RequestListener() {
@Override
public boolean onLoadFailed(@Nullable @org.jetbrains.annotations.Nullable GlideException e, Object model, Target target, boolean isFirstResource) {
Log.e(TAG, "download failed!");
return false;
}

@Override
public boolean onResourceReady(Bitmap resource, Object model, Target target, DataSource dataSource, boolean isFirstResource) {
Log.d(TAG, "download successful!");
int size = resource.getRowBytes() * resource.getHeight();
ByteBuffer b = ByteBuffer.allocate(size);

resource.copyPixelsToBuffer(b);
b.rewind();

byte[] bytes = new byte[size];

try {
b.get(bytes, 0, bytes.length);
Log.d(TAG, "result: " + checkIntegrity(bytes));
} catch (BufferUnderflowException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
return false;
}
})
.into(target);

[...]

public boolean checkIntegrity(byte[] bytes) throws NoSuchAlgorithmException {
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] encodedhash = digest.digest(bytes);
String calculatedHash = bytesToHex(encodedhash);
return calculatedHash.equalsIgnoreCase(checkHash);
}

public String bytesToHex(byte[] hash) {
StringBuilder hexString = new StringBuilder(2 * hash.length);
for (int i = 0; i < hash.length; i++) {
String hex = Integer.toHexString(0xff & hash[i]);
if (hex.length() == 1) {
hexString.append('0');
}
hexString.append(hex);
}
return hexString.toString();
}
```

**Layout XML**:
```xml

```

**Stack trace / LogCat**: There is no error because the download and load into the target view is successful.