The path can be relative or absolute under $GITHUB_WORKSPACE

.github/workflows/test.yml

@@ -24,6 +24,8 @@ jobs:
         run: __test__/verify-no-unstaged-changes.sh
 
   test:
+    env:
+      main_path: main_path_test
     strategy:
       matrix:
         runs-on: [ubuntu-latest, macos-latest, windows-latest]
@@ -57,6 +59,16 @@ jobs:
         shell: bash
         run: __test__/verify-clean.sh
 
+      # Use environment variable as path
+      - name: Environment path test
+        uses: ./
+        with:
+          ref: test-data/v2/basic
+          path: ${{ env.main_path }}
+      - name: Verify environment path test
+        shell: bash
+        run: __test__/verify-environment-path.sh
+
       # Side by side
       - name: Checkout side by side 1
         uses: ./

README.md

@@ -69,7 +69,7 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
     # Default: true
     persist-credentials: ''
 
-    # Relative path under $GITHUB_WORKSPACE to place the repository
+    # Relative or absolute path under $GITHUB_WORKSPACE to place the repository
     path: ''
 
     # Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching
@@ -152,6 +152,18 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
     path: my-tools
 ```
 
+## Checkout repo with a environment based path
+
+```yaml
+env:
+  main_path: ${{ github.workspace }}/main
+steps:
+- name: Checkout
+  uses: actions/checkout@v2
+  with:
+    path: ${{ env.main_path }}
+```
+
 ## Checkout multiple repos (nested)
 
 ```yaml

__test__/verify-environment-path.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+if [ ! -f "./main_path_test/basic-file.txt" ]; then
+    echo "Expected file does not exist"
+    exit 1
+fi

action.yml

@@ -49,7 +49,7 @@ inputs:
     description: 'Whether to configure the token or SSH key with the local git config'
     default: true
   path:
-    description: 'Relative path under $GITHUB_WORKSPACE to place the repository'
+    description: 'Relative or absolute path under $GITHUB_WORKSPACE to place the repository'
   clean:
     description: 'Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching'
     default: true

adrs/0153-checkout-v2.md

@@ -65,7 +65,7 @@ We want to take this opportunity to make behavioral changes, from v1. This docum
     description: 'Whether to configure the token or SSH key with the local git config'
     default: true
   path:
-    description: 'Relative path under $GITHUB_WORKSPACE to place the repository'
+    description: 'Relative or absolute path under $GITHUB_WORKSPACE to place the repository'
   clean:
     description: 'Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching'
     default: true
@@ -287,4 +287,4 @@ Note:
 - Update samples to consume `actions/checkout@v2`
 - Job containers now require git in the PATH for checkout, otherwise fallback to REST API
 - Minimum git version 2.18
-- Update problem matcher logic regarding source file verification (runner)
+- Update problem matcher logic regarding source file verification (runner)