[REG 2.46.0 -> 2.47.0] Git hangs on fetch

[orgads]

• [X] I was not able to find an open or closed issue matching what I'm seeing

Setup

• Which version of Git for Windows are you using? Is it 32-bit or 64-bit?

$ git --version --build-options

git version 2.47.0.windows.1
cpu: x86_64
built from commit: 8e380191abeda7a995e87abf4acc9e1702fdc698
sizeof-long: 4
sizeof-size_t: 8
shell-path: F:/git-sdk-64/usr/bin/sh
feature: fsmonitor--daemon
libcurl: 8.10.1
OpenSSL: OpenSSL 3.2.3 3 Sep 2024
zlib: 1.3.1

• Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit?

$ cmd.exe /c ver

Microsoft Windows [Version 10.0.19045.4355]

• What options did you set as part of the installation? Or did you choose the defaults?

# One of the following:
> type "C:\Program Files\Git\etc\install-options.txt"
> type "C:\Program Files (x86)\Git\etc\install-options.txt"
> type "%USERPROFILE%\AppData\Local\Programs\Git\etc\install-options.txt"
> type "$env:USERPROFILE\AppData\Local\Programs\Git\etc\install-options.txt"
$ cat /etc/install-options.txt

Editor Option: VIM
Custom Editor Path:
Default Branch Option:
Path Option: Cmd
SSH Option: OpenSSH
Tortoise Option: false
CURL Option: WinSSL
CRLF Option: CRLFAlways
Bash Terminal Option: MinTTY
Git Pull Behavior Option: Rebase
Use Credential Manager: Enabled
Performance Tweaks FSCache: Enabled
Enable Symlinks: Enabled
Enable FSMonitor: Disabled

Details

• Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

Git Bash

• What commands did you run to trigger this issue? If you can provide a Minimal, Complete, and Verifiable example this will help us understand the issue.

git fetch

• What did you expect to occur after running these commands?

It should be done successfully after a while.

• What actually happened instead?

It sometimes hangs. I see the following spawned process, which doesn't use any CPU, and doesn't terminate:

git index-pack --stdin -v --fix-thin "--keep=fetch-pack 4272 on my-pc" --pack_header=2,291

The output is:

remote: Counting objects: 195, done
remote: Finding sources: 100% (292/292)
<nothing happens>
<when I press Ctrl-C>
fetch-pack: unexpected disconnect while reading sideband packet

[dscho]

• What commands did you run to trigger this issue? If you can provide a Minimal, Complete, and Verifiable example this will help us understand the issue.

git fetch

To make this example a little more complete, could you describe from where you are fetching? Is it github.com, a self-hosted git daemon, from a network share? Is it a big fetch, i.e. have already dozens of megabytes been transferred, or is it a small fetch? Did you try to disable sideband?

[orgads]

It's a hosted gerrit 3.8 server. The fetch is small, took a few seconds after I downgraded to 2.46.

I can try to disable sideband tomorrow.

[jfcherng]

Latest update: Now it clones okay... without any local env modification... Okay again it just happened.

---

I tried to clone my https://github.com/jfcherng/copilot-node-server .

It seems to alway hang if I clone git@github.com:jfcherng/copilot-node-server.git. But it's okay if I clone https://github.com/jfcherng/copilot-node-server.git.

---

Update: It still hangs with GIT_CURL_VERBOSE=1 GIT_TRACE=1 git -c sendpack.sideband=false clone git@github.com:jfcherng/copilot-node-server.git

[jfcherng@HOME Desktop]$ GIT_CURL_VERBOSE=1 GIT_TRACE=1 git -c sendpack.sideband=false clone git@github.com:jfcherng/copilot-node-server.git
10:14:30.318887 exec-cmd.c:266          trace: resolved executable dir: C:/Program Files/Git/mingw64/bin
10:14:30.329889 git.c:479               trace: built-in: git clone git@github.com:jfcherng/copilot-node-server.git
Cloning into 'copilot-node-server'...
10:14:30.350892 run-command.c:667       trace: run_command: unset GIT_CONFIG_PARAMETERS GIT_DIR; GIT_PROTOCOL=version=2 ssh -o SendEnv=GIT_PROTOCOL git@github.com 'git-upload-pack '\''jfcherng/copilot-node-server.git'\'''
10:14:30.350892 run-command.c:928       trace: start_command: ssh -o SendEnv=GIT_PROTOCOL git@github.com 'git-upload-pack '\''jfcherng/copilot-node-server.git'\'''
remote: Enumerating objects: 542, done.
remote: Counting objects: 100% (100/100), done.
10:14:33.230184 run-command.c:667       trace: run_command: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 32844 on 3bc-f19' --check-self-contained-and-connected
10:14:33.230184 run-command.c:928       trace: start_command: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 32844 on 3bc-f19' --check-self-contained-and-connected
10:14:33.298183 exec-cmd.c:266          trace: resolved executable dir: C:/Program Files/Git/mingw64/libexec/git-core
10:14:33.311182 git.c:479               trace: built-in: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 32844 on 3bc-f19' --check-self-contained-and-connected
remote: Compressing objects: 100% (65/65), done.
Receiving objects:   1% (6/542)

It just hangs on Receiving objects: 1% (6/542). It is always 1% (6/542) everytime I retried. Eventually it failed as the following.

[jfcherng@HOME Desktop]$ GIT_CURL_VERBOSE=1 GIT_TRACE=1 git -c sendpack.sideband=false clone git@github.com:jfcherng/copilot-node-server.git
10:16:32.600368 exec-cmd.c:266          trace: resolved executable dir: C:/Program Files/Git/mingw64/bin
10:16:32.614373 git.c:479               trace: built-in: git clone git@github.com:jfcherng/copilot-node-server.git
Cloning into 'copilot-node-server'...
10:16:32.653368 run-command.c:667       trace: run_command: unset GIT_CONFIG_PARAMETERS GIT_DIR; GIT_PROTOCOL=version=2 ssh -o SendEnv=GIT_PROTOCOL git@github.com 'git-upload-pack '\''jfcherng/copilot-node-server.git'\'''
10:16:32.653368 run-command.c:928       trace: start_command: ssh -o SendEnv=GIT_PROTOCOL git@github.com 'git-upload-pack '\''jfcherng/copilot-node-server.git'\'''
remote: Enumerating objects: 542, done.
remote: Counting objects: 100% (100/100), done.
10:16:35.393876 run-command.c:667       trace: run_command: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 20220 on 3bc-f19' --check-self-contained-and-connected
10:16:35.393876 run-command.c:928       trace: start_command: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 20220 on 3bc-f19' --check-self-contained-and-connected
10:16:35.455879 exec-cmd.c:266          trace: resolved executable dir: C:/Program Files/Git/mingw64/libexec/git-core
10:16:35.469968 git.c:479               trace: built-in: git index-pack --stdin -v --fix-thin '--keep=fetch-pack 20220 on 3bc-f19' --check-self-contained-and-connected
remote: Compressing objects: 100% (65/65), done.
fetch-pack: unexpected disconnect while reading sideband packet
fatal: fetch-pack: invalid index-pack output

[orgads]

Ah right, my case was ssh too.

[EemilAhonen]

We are having this same problem with SSH on multiple machines that upgraded to the latest 2.47.0. All clones over 1mb from Gitlab are failing, the Git window just freezes at random points. Uninstalling 2.47.0 and reinstalling 2.44.0 solved the issue.

[dscho]

Does it work if you copy the usr\bin\ssh.exe over from v2.46.2?

[jfcherng]

Does it work if you copy the usr\bin\ssh.exe over from v2.46.2?

In my case, no.