### Please describe the problem.
When copying large files to an S3 special remote, I get a cryptic error message -- what can cause this?

### What steps will reproduce the problem?
[[!format sh """
git annex copy --all --to s3_dssi-bioinfo-shlyakhi_sccrispr-data
"""]]

### What version of git-annex are you using? On what operating system?
[[!format sh """
$ git annex version
git-annex version: 10.20220724-ge30d846
build flags: Assistant Webapp Pairing Inotify DBus DesktopNotify TorrentParser MagicMime Feeds Testsuite S3 WebDAV
dependency versions: aws-0.22 bloomfilter-2.0.1.0 cryptonite-0.29 DAV-1.3.4 feed-1.3.2.0 ghc-8.10.7 http-client-0.7.9 persistent-sqlite-2.13.0.3 torrent-10000.1.1 uuid-1.3.15 yesod-1.6.1.2
key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 BLAKE2B256E BLAKE2B256 BLAKE2B512E BLAKE2B512 BLAKE2B160E BLAKE2B160 BLAKE2B224E BLAKE2B224 BLAKE2B384E BLAKE2B384 BLAKE2BP512E BLAKE2BP512 BLAKE2S256E BLAKE2S256 BLAKE2S160E BLAKE2S160 BLAKE2S224E BLAKE2S224 BLAKE2SP256E BLAKE2SP256 BLAKE2SP224E BLAKE2SP224 SHA1E SHA1 MD5E MD5 WORM URL X*
remote types: git gcrypt p2p S3 bup directory rsync web bittorrent webdav adb tahoe glacier ddar git-lfs httpalso borg hook external
operating system: linux x86_64
supported repository versions: 8 9 10
upgrade supported from repository versions: 0 1 2 3 4 5 6 7 8 9 10
local repository version: 8
$ uname -a
Linux ctchpcpx212.merck.com 3.10.0-1160.6.1.el7.x86_64 #1 SMP Tue Nov 17 13:59:11 UTC 2020 x86_64 GNU/Linux
"""]]

### Please provide any additional information below.

[[!format sh """
copy SHA256E-s67657--d4ab2864cf2d94fb9eeb74721860da93bea55c45194b6c678d5c66040126edfb.csv ok
copy SHA256E-s10246716468--aa082f7efc476b2903330d57261d16d884653e97e5d007e559ef5ae6a03a52ba.bam (to s3_dssi-bioinfo-shlyakhi_sccrispr-data...) 
                                      
  13:1 (567)-13:8 (574): Expected end element for: Name {nameLocalName = "meta", nameNamespace = Nothing, namePrefix = Nothing}, but received: EventEndElement (Name {nameLocalName = "head", nameNamespace = Nothing, namePrefix = Nothing})
                                      
                                      
  13:1 (567)-13:8 (574): Expected end element for: Name {nameLocalName = "meta", nameNamespace = Nothing, namePrefix = Nothing}, but received: EventEndElement (Name {nameLocalName = "head", nameNamespace = Nothing, namePrefix = Nothing})
failed
"""]]

### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

git-annex fills a real need, and none of the alternate tools I've looked at fill it as well.  I've used it at three different workplaces to manage data, and been able to adapt it to every use case.  It also represents a staggering amount of work by one person.
