Rebase to v2.51.1

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,68 @@
+ - [ ] I was not able to find an [open](https://github.com/microsoft/git/issues?q=is%3Aopen)
+        or [closed](https://github.com/microsoft/git/issues?q=is%3Aclosed) issue matching
+        what I'm seeing, including in [the `git-for-windows/git` tracker](https://github.com/git-for-windows/git/issues).
+
+### Setup
+
+ - Which version of `microsoft/git` are you using? Is it 32-bit or 64-bit?
+
+```
+$ git --version --build-options
+
+** insert your machine's response here **
+```
+
+Are you using Scalar or VFS for Git?
+
+** insert your answer here **
+
+If VFS for Git, then what version?
+
+```
+$ gvfs version
+
+** insert your machine's response here **
+```
+
+ - Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit?
+
+```
+$ cmd.exe /c ver
+
+** insert your machine's response here **
+```
+
+ - Any other interesting things about your environment that might be related
+   to the issue you're seeing?
+
+** insert your response here **
+
+### Details
+
+ - Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other
+
+** insert your response here **
+
+ - What commands did you run to trigger this issue? If you can provide a
+   [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve)
+   this will help us understand the issue.
+
+```
+** insert your commands here **
+```
+ - What did you expect to occur after running these commands?
+
+** insert here **
+
+ - What actually happened instead?
+
+** insert here **
+
+ - 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: **insert name here**
+   * [ ] Other internal repo.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,22 +1,10 @@
 Thanks for taking the time to contribute to Git!
 
-Those seeking to contribute to the Git for Windows fork should see
-http://gitforwindows.org/#contribute on how to contribute Windows specific
-enhancements.
-
-If your contribution is for the core Git functions and documentation
-please be aware that the Git community does not use the github.com issues
-or pull request mechanism for their contributions.
-
-Instead, we use the Git mailing list ([email protected]) for code and
-documentation submissions, code reviews, and bug reports. The
-mailing list is plain text only (anything with HTML is sent directly
-to the spam folder).
-
-Nevertheless, you can use GitGitGadget (https://gitgitgadget.github.io/)
-to conveniently send your Pull Requests commits to our mailing list.
-
-For a single-commit pull request, please *leave the pull request description
-empty*: your commit message itself should describe your changes.
-
-Please read the "guidelines for contributing" linked above!
+This fork contains changes specific to monorepo scenarios. If you are an
+external contributor, then please detail your reason for submitting to
+this fork:
+
+* [ ] This is an early version of work already under review upstream.
+* [ ] This change only applies to interactions with Azure DevOps and the
+      GVFS Protocol.
+* [ ] This change only applies to the virtualization hook and VFS for Git.

.github/actions/akv-secret/action.yml

@@ -0,0 +1,54 @@
+name: Get Azure Key Vault Secrets
+
+description: |
+  Get secrets from Azure Key Vault and store the results as masked step outputs,
+  environment variables, or files.
+
+inputs:
+  vault:
+    required: true
+    description: Name of the Azure Key Vault.
+  secrets:
+    required: true
+    description: |
+      Comma- or newline-separated list of secret names in Azure Key Vault.
+      The output and encoding of secrets can be specified using this syntax:
+
+        SECRET ENCODING> $output:OUTPUT
+        SECRET ENCODING> $env:ENVAR
+        SECRET ENCODING> FILE
+
+        SECRET      Name of the secret in Azure Key Vault.
+        ENCODING    (optional) Encoding of the secret: base64.
+        OUTPUT      Name of a step output variable.
+        ENVAR       Name of an environment variable.
+        FILE        File path (relative or absolute).
+
+      If no output format is specified the default is a step output variable
+      with the same name as the secret. I.e, SECRET > $output:SECRET.
+
+      Examples:
+
+        Assign output variable named `raw-var` to the raw value of the secret
+        `raw-secret`:
+
+          raw-secret > $output:raw-var
+
+        Assign output variable named `decoded-var` to the base64 decoded value
+        of the secret `encoded-secret`:
+
+          encoded-secret base64> $output:decoded-var
+
+        Download the secret named `tls-certificate` to the file path
+        `.certs/tls.cert`:
+
+          tls-certificate > .certs/tls.cert
+
+        Assign environment variable `ENV_SECRET` to the base64 decoded value of
+        the secret `encoded-secret`:
+
+        encoded-secret base64> $env:ENV_SECRET
+
+runs:
+  using: node20
+  main: index.js