git pull takes a long time

[v-liuweining]

• I was not able to find an open
  or closed issue matching
  what I'm seeing, including in the git-for-windows/git tracker.

  Issue #3840

Setup

• Which version of microsoft/git are you using? Is it 32-bit or 64-bit?

64-bit

$ git --version --build-options

TestCase1: 
    git version 2.35.3.vfs.0.0
    cpu: x86_64
    built from commit: d34442f3ab072056eab72131c02abcf76b32d827
    sizeof-long: 4
    sizeof-size_t: 8
    shell-path: /bin/sh
    feature: fsmonitor--daemon

TestCase2:
    git version 2.43.0.vfs.0.0
    cpu: x86_64
    built from commit: b7a6ed788a205fb2c0013111d277b4c9d6ab35bd
    sizeof-long: 4
    sizeof-size_t: 8
    shell-path: /bin/sh
    feature: fsmonitor--daemon

Are you using Scalar or VFS for Git?

Scalar

• 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 10.0.19045.3803]

• Any other interesting things about your environment that might be related
  to the issue you're seeing?

Details

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

  CMD
  

• 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 pull
  

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

  The completion time of running "git pull" with git version 2.43.0.vfs.0.0 can be close to git version 2.35.3.vfs.0.0.

• What actually happened instead?

  Since git version 2.36, the execution time of "git pull" has become significantly longer. I tried using the following commands to log the details:

  set GIT_TRACE2_PERF=1
  set GIT_TRACE_PACK_ACCESS=1
  set GIT_CURL_VERBOSE=1
  git pull
  

  Git-2.35.3.vfs.0.0-64-bit:

  • Multiple consecutive executions of "git pull," with an average execution time of about 10 seconds.
  • log: Git-2.35.3.vfs.0.0-64-bit.txt.
  • git config: here

  Git-2.43.0.vfs.0.0-64-bit:

  • Multiple consecutive executions of "git pull," with an average execution time of about 100+ seconds.
  • log: Git-2.43.0.vfs.0.0-64-bit.txt.
  • git config: here

  The local repositories used for testing are generated by executing "scalar clone" after installing the corresponding git version.

• If the problem was occurring with a specific repository, can you specify
  the repository?

  • Public repo: insert URL here
  • Windows monorepo
  • Office monorepo
  • Other Microsoft-internal repo: GendoxData
  • Other internal repo.