Git - 缓慢获取 - 凭证管理器主机提供程序

Question

I have noticed that git operations slowed down recently, it might be related to the upgrade of git and using credential-manager-core instead of credential-manager, I've tried to diagnose the issue using GCM_TRACE=1 git fetch , looks like I might have messed up my configuration:

[GetProviderAsync] Checking against 3 host providers registered with priority 'Normal'.

My colleague does not see such line and only one host provider is checked. How can I change the configuration of host providers used by git credential manager?

Update: Using a portable version of git did not help, trace output below:

[RunInternalAsync] Version: 2.0.394.50751
[RunInternalAsync] Runtime: .NET Framework 4.0.30319.42000
[RunInternalAsync] Platform: Windows (x86-64)
[RunInternalAsync] AppPath: git-credential-manager-core
[RunInternalAsync] Arguments: get
[ExecuteAsync] Start 'get' command...
[ExecuteAsync] Detecting host provider for input:
[ExecuteAsync]   protocol=https
[ExecuteAsync]   host=dev.azure.com
[ExecuteAsync]   path=........
[ExecuteAsync]   username=........
[GetProviderAsync] Performing auto-detection of host provider.
[GetProviderAsync] Checking against 3 host providers registered with priority 'Normal'.
[ExecuteAsync] Host provider 'Azure Repos' was selected.
[GetCredentialAsync] Looking for existing credential in store with service=https://........ account=...
[GetCredentialAsync] Existing credential found.
[ExecuteAsync] End 'get' command...
[RunInternalAsync] Version: 2.0.394.50751
[RunInternalAsync] Runtime: .NET Framework 4.0.30319.42000
[RunInternalAsync] Platform: Windows (x86-64)
[RunInternalAsync] AppPath: git-credential-manager-core
[RunInternalAsync] Arguments: store
[ExecuteAsync] Start 'store' command...
[ExecuteAsync] Detecting host provider for input:
[ExecuteAsync]   protocol=https
[ExecuteAsync]   host=........
[ExecuteAsync]   path=................
[ExecuteAsync]   username=..............
[ExecuteAsync]   password=********
[GetProviderAsync] Performing auto-detection of host provider.
[GetProviderAsync] Checking against 3 host providers registered with priority 'Normal'.
[ExecuteAsync] Host provider 'Azure Repos' was selected.
[StoreCredentialAsync] Storing credential with service=............. account=...............
[StoreCredentialAsync] Credential was successfully stored.
[ExecuteAsync] End 'store' command...

Number of registered host providers seems suspicious but I do not know how it can be changed. Also - storing credentials on each fetch does not seem like an efficient thing to do.

Update 2: Switching to SSH authorization did not help much, so the root cause of delays is not related to GCM. I'll investiage a bit more and probably close the question.

Answer 1

Test if this is linked to your current Git for Windows installation by:

• uncompressing the portable version (like PortableGit-2.31.1-64-bit.7z.exe , auto-extractible) in a new folder ( C:\git for instance)
• setting a custom simplified %PATH% in a CMD session

set PATH=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\
set GH=C:\path\to\git
set PATH=%GH%\bin;%GH%\usr\bin;%GH%\mingw64\bin;%GH%\mingw64\libexec\git-core;%PATH%

• checking if the issue persists on git fetch

That way, you don't disturb your current setup, and limit your tests to a single CMD session.

Answer 2

I did not use the git trace as you did when I had a similar issue, but I was getting 3 "detecting host provider for" messages every time I did a fetch. I was on git 2.33.1.windows.1 and wasn't using https remotes before then. (2.33.1 stopped allowing rsa/sha-1 keys apparently, and I switched to personal access tokens while troubleshooting.) I was already using credential manager core so my solution was to add a credential.provider setting to.gitconfig telling it that I am connecting to a bitbucket server.

[credential]
    helper = manager-core
[credential "https://example.com"]
    provider = bitbucket

After doing this I don't get any "detecting host provider" messages and git fetch runs much faster now. https://github.com/microsoft/Git-Credential-Manager-Core/blob/main/docs/configuration.md