Output from remote broken after update to v2.55

[Balkoth]

Existing issues matching what you're seeing

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

Git for Windows version

git version 2.55.0.windows.2
cpu: x86_64
built from commit: c8dff95af823bd04181a583c03f3fbb954551c30
sizeof-long: 4
sizeof-size_t: 8
shell-path: D:/git-sdk-64-build-installers/usr/bin/sh
rust: disabled
feature: fsmonitor--daemon
gettext: enabled
libcurl: 8.21.0
OpenSSL: OpenSSL 3.5.7 9 Jun 2026
zlib: 1.3.2
SHA-1: SHA1_DC
SHA-256: SHA256_BLK
default-ref-format: files
default-hash: sha1

Windows version

Windows 11

Windows CPU architecture

x86_64 (64-bit)

Additional Windows version information

Microsoft Windows [Version 10.0.17763.8880]

Options set during installation

Editor Option: VisualStudioCode
Custom Editor Path: 
Default Branch Option:  
Path Option: Cmd
SSH Option: OpenSSH
Tortoise Option: false
CURL Option: WinSSL
CRLF Option: CRLFCommitAsIs
Bash Terminal Option: ConHost
Git Pull Behavior Option: Merge
Use Credential Manager: Enabled
Performance Tweaks FSCache: Enabled
Enable Symlinks: Enabled
Enable FSMonitor: Disabled

Other interesting things

Our repositories have hooks on the server that run PowerShell scripts. These scripts start other processes via Start-Process or direct invocation. Before updating the output of these tools was correctly streamed back to the client. Now we see only empty "remote:" lines where these tools are invoked.

Terminal/shell

PowerShell

Commands that trigger the issue

git push

Expected behaviour

Output is streamed and displayed to the terminal.

Actual behaviour

Only empty lines appear after updating:

remote:
remote:
remote:
remote:
remote:
remote:
remote:
remote:
remote:
remote:

Repository

No response

[dscho]

Hmm. This is really hard to debug and develop a fix for without a reproducer. @Balkoth I'm not asking you to share your actual setup, but it would be really good if you could at least give it a try to provide a minimal, complete, verifiable example.

[Balkoth]

Something along these lines might help.

post-receive:

while read oval nval ref
do
	if [[ "$ref" == "refs/heads/master" ]]; then
		exec powershell.exe -NoProfile -NonInteractive -File "path_to_script.ps1"
	fi
done
exit 0

script.ps1:

Write-Host "Start build process:"
if ((Start-Process -FilePath "dotnet" -ArgumentList "--version" -PassThru -NoNewWindow -Wait).ExitCode -ne 0) { return }

Only the message from Write-Host is received on the client, the output of Start-Process is cut off/stripped away/left out:

remote: Start build process:
remote: 

[dscho]

Something along these lines might help.

@Balkoth I am absolutely uninterested in being thrown breadcrumbs, an incomplete report presented as if it "might help" me. This is a bug I thought you wanted to see fixed. I don't need any help with this problem, thanks for asking.

[Balkoth]

I dont understand what you are talking about. These 2 files reproduce the problem.

[Balkoth]

For anyone running into the same problem and looking for a workaround:

We changed our calls from this:

if ((Start-Process -FilePath "dotnet" -ArgumentList "--version" -PassThru -NoNewWindow -Wait).ExitCode -ne 0) { return }

To this:

& dotnet --version 2>&1 | ForEach-Object { Write-Host $_ }