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Pin GIT_CONFIG_GLOBAL to the temp config during global auth setup

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configureTempGlobalConfig isolates global git config by overriding HOME to
a temporary directory. But GIT_CONFIG_GLOBAL takes precedence over HOME when
git locates the global config file, so when a workflow already has
GIT_CONFIG_GLOBAL set in the environment, 'git config --global' writes land
in that file instead of the temporary config. replaceTokenPlaceholder then
reads the temporary config, cannot find the placeholder, and fails with
'Unable to replace auth placeholder'.

Set GIT_CONFIG_GLOBAL to the temporary config alongside the HOME override so
global config operations always target the temp file regardless of any
inherited value, and unset it again in removeGlobalConfig.

Assisted-By: Claude Opus 4.8
This commit is contained in:
Nathan Moin Vaziri 2026-06-05 11:08:14 -07:00
parent b9e0990d21
commit 2d76d21b2e
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3 changed files with 34 additions and 2 deletions
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7
dist/index.js vendored
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@ -35109,6 +35109,10 @@ class GitAuthHelper {
// Override HOME
info(`Temporarily overriding HOME='${this.temporaryHomePath}' before making global git config changes`);
this.git.setEnvironmentVariable('HOME', this.temporaryHomePath);
// GIT_CONFIG_GLOBAL takes precedence over HOME when locating the global
// config file. Pin it to the temporary config so an inherited
// GIT_CONFIG_GLOBAL cannot redirect our global git config writes elsewhere.
this.git.setEnvironmentVariable('GIT_CONFIG_GLOBAL', newGitConfigPath);
return newGitConfigPath;
}
async configureGlobalAuth() {
@ -35183,8 +35187,9 @@ class GitAuthHelper {
}
async removeGlobalConfig() {
if (this.temporaryHomePath?.length > 0) {
core_debug(`Unsetting HOME override`);
core_debug(`Unsetting HOME and GIT_CONFIG_GLOBAL overrides`);
this.git.removeEnvironmentVariable('HOME');
this.git.removeEnvironmentVariable('GIT_CONFIG_GLOBAL');
await rmRF(this.temporaryHomePath);
}
}