trying to push to a different remote, that has any objects, not present in GVFS remote fails

Here's the scenario

$ git remote add upstream c:personal/ignas/testing3
$ git show
commit 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 (HEAD -> master, origin/master)
$ git push --no-verify -- upstream  4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T1
Initialized empty Git repository in /var/lib/gitolite3/repositories/personal/ignas/testing3.git/
Enumerating objects: 347, done.
Counting objects: 100% (347/347), done.
Delta compression using up to 8 threads
Compressing objects: 100% (234/234), done.
Writing objects: 100% (347/347), 11.02 MiB | 3.46 MiB/s, done.
Total 347 (delta 93), reused 318 (delta 66)
remote: Resolving deltas: 100% (93/93), done.
To c:personal/ignas/testing3
 * [new tag]         4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 -> T1

In another checkout:
$ git remote add upstream c:personal/ignas/testing3
$ git checkout -b new_branch
Switched to a new branch 'new_branch'
$ vim banana.txt
$ git commit -am "Simple change"
[new_branch 0d39d0d] Simple change
 1 file changed, 1 insertion(+)
$ git push upstream new_branch
Enumerating objects: 5, done.
Counting objects: 100% (5/5), done.
Delta compression using up to 8 threads
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 307 bytes | 307.00 KiB/s, done.
Total 3 (delta 1), reused 0 (delta 0)
To c:personal/ignas/testing3
 * [new branch]      new_branch -> new_branch

Back in previous checkout
$ git push --no-verify -- upstream  4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2
CRASH! (because 

So when we push to a new remote, that has no objects, everything works fine, but when we push to a remote, that has objects, which we don't have, read-object hook is invoked, tries to download the missing object from GVFS, fails and the whole process dies.

Below are traces for the failing push

$ GIT_TRACE_PACKET=1 GIT_TRACE=1 git push --no-verify -- upstream  4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2
18:35:34.977320 run-command.c:664       trace: run_command: /testing3/src/.git/hooks/pre-command push --no-verify -- upstream 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2 --git-pid=53585
18:35:35.101879 git.c:498               trace: built-in: git push --no-verify -- upstream 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2
18:35:35.115549 run-command.c:664       trace: run_command: unset GIT_PREFIX; ssh c 'git-receive-pack '\''personal/ignas/testing3'\'''
18:35:41.005561 pkt-line.c:80           packet:         push< 0d39d0dab690d7389ac06812af74f486db563f38 refs/heads/new_branch\0report-status delete-refs side-band-64k quiet atomic ofs-delta agent=git/2.20.1
18:35:41.005614 pkt-line.c:80           packet:         push< 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 refs/tags/T1
18:35:41.005627 pkt-line.c:80           packet:         push< 0000
18:35:41.008441 pkt-line.c:80           packet:         push> 0000000000000000000000000000000000000000 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 refs/tags/T2\0 report-status side-band-64k agent=git/2.20.1.vfs.1.1.47.g534dbe1ad1
18:35:41.008800 pkt-line.c:80           packet:         push> 0000
18:35:41.009246 run-command.c:664       trace: run_command: git pack-objects --all-progress-implied --revs --stdout --thin --delta-base-offset --progress
18:35:41.016168 git.c:498               trace: built-in: git pack-objects --all-progress-implied --revs --stdout --thin --delta-base-offset --progress
18:35:41.022843 run-command.c:664       trace: run_command: /Users/ignas/Uber/testing3/src/.git/hooks/read-object
18:35:41.024362 pkt-line.c:80           packet:          git> git-read-object-client
18:35:41.024387 pkt-line.c:80           packet:          git> version=1
18:35:41.024396 pkt-line.c:80           packet:          git> 0000
18:35:41.027295 pkt-line.c:80           packet:          git< git-read-object-server
18:35:41.027312 pkt-line.c:80           packet:          git< version=1
18:35:41.027330 pkt-line.c:80           packet:          git< 0000
18:35:41.027335 pkt-line.c:80           packet:          git> capability=get
18:35:41.027340 pkt-line.c:80           packet:          git> 0000
18:35:41.027379 pkt-line.c:80           packet:          git< capability=get
18:35:41.027391 pkt-line.c:80           packet:          git< 0000
18:35:41.027400 pkt-line.c:80           packet:          git> command=get
18:35:41.027420 pkt-line.c:80           packet:          git> sha1=0d39d0dab690d7389ac06812af74f486db563f38
18:35:41.027426 pkt-line.c:80           packet:          git> 0000

While without GVFS, same push looks like this:

$ GIT_TRACE_PACKET=1 GIT_TRACE=1 git push --no-verify -- upstream  4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2
18:38:09.719088 git.c:498               trace: built-in: git push --no-verify -- upstream 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85:refs/tags/T2
18:38:09.730635 run-command.c:664       trace: run_command: unset GIT_PREFIX; ssh c 'git-receive-pack '\''personal/ignas/testing3'\'''
18:38:15.614498 pkt-line.c:80           packet:         push< 0d39d0dab690d7389ac06812af74f486db563f38 refs/heads/new_branch\0report-status delete-refs side-band-64k quiet atomic ofs-delta agent=git/2.20.1
18:38:15.614551 pkt-line.c:80           packet:         push< 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 refs/tags/T1
18:38:15.614564 pkt-line.c:80           packet:         push< 0000
18:38:15.617145 pkt-line.c:80           packet:         push> 0000000000000000000000000000000000000000 4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 refs/tags/T2\0 report-status side-band-64k agent=git/2.20.1.vfs.1.1.47.g534dbe1ad1
18:38:15.617558 pkt-line.c:80           packet:         push> 0000
18:38:15.618265 run-command.c:664       trace: run_command: git pack-objects --all-progress-implied --revs --stdout --thin --delta-base-offset --progress
18:38:15.624875 git.c:498               trace: built-in: git pack-objects --all-progress-implied --revs --stdout --thin --delta-base-offset --progress
Total 0 (delta 0), reused 0 (delta 0)
18:38:15.981209 pkt-line.c:80           packet:     sideband< \1000eunpack ok0014ok refs/tags/T20000
18:38:15.981288 pkt-line.c:80           packet:         push< unpack ok
18:38:15.981298 pkt-line.c:80           packet:         push< ok refs/tags/T2
18:38:15.981304 pkt-line.c:80           packet:         push< 0000
18:38:16.329504 pkt-line.c:80           packet:     sideband< 0000
To c:personal/ignas/testing3
 * [new tag]         4b6a28890fc09aa2505e6e6a3bb34f0e65fb0e85 -> T2

It seems, that git version with GVFS is unneccessarily trying to get ALL missing objects, even though getting the new branch is unneccessary in this particular case

Reproduce both git push cases with GIT_TRACE_PACKET=1 and GIT_TRACE=1, then start at .git/hooks/read-object and the git pack-objects entry point shown in the trace. Compare why the GVFS case requests missing objects from the read-object hook. Done when pushing tag T2 succeeds without unnecessarily fetching unrelated missing objects.