[BUG] since_last_remote_commit does not work in v29.0.4

[haodeon]

Is there an existing issue for this?

• I have searched the existing issues

Does this issue exist in the latest version?

• I'm using the latest release

Describe the bug?

Setting since_last_remote_commit: true does not set base_sha properly.

base_sha is being set to the previous commit to HEAD.

To Reproduce

I created a public repo with this config

name: "Changed files"
on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest  # windows-latest | macos-latest
    name: Test changed-files
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.
      
      # Example 1
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v29.0.4
        with:
          since_last_remote_commit: 'true'

      - name: List all changed files
        run: |
          for file in ${{ steps.changed-files.outputs.all_changed_files }}; do
            echo "$file was changed"
          done
      
      # Example 2

      - name: Show output
        run: |
          echo '${{ toJSON(steps.changed-files.outputs) }}'
        shell:
          bash

I then push 3 commits at a time. Each commit made a change a different file in the repo.

The result is only one changed file was ever being listed and also shown in the output.

When reverting to 29.0.3 I could restore the correct behaviour

What OS are you seeing the problem on?

ubuntu-latest or ubuntu-20.04

Expected behavior?

The expected behaviour is to list all the changed files since the last remote commit

Relevant log output

v29.0.4 output for setting base_sha

  # "Set base sha..."
  if [[ -n "" ]]; then
    BASE_SHA=$(git log --format="%H" --date=local --since="" --reverse | head -n 1)
    echo "::set-output name=base_sha::$BASE_SHA"
  elif [[ -n "" ]]; then
    echo "::set-output name=base_sha::"
  elif [[ "true" == "true" ]]; then
    LAST_REMOTE_COMMIT=$(git rev-parse $(git branch -r --sort=-committerdate | head -1))
    if [[ "6bf8ef4c6d1cd5f2cdde68ec29ac6700e59952b7" == "$LAST_REMOTE_COMMIT" ]]; then
      LAST_REMOTE_COMMIT=$(git rev-parse "6bf8ef4c6d1cd5f2cdde68ec29ac6700e59952b7^1")
    fi
    echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
  fi

  # "Calculating the previous and current SHA..."
  bash $GITHUB_ACTION_PATH/diff-sha.sh
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
  env:
    GITHUB_SERVER_URL: https://github.com
    GITHUB_REPOSITORY: haodeon/changed-files
    GITHUB_BASE_REF: 
    GITHUB_HEAD_REF: 
    GITHUB_ACTION_PATH: /home/runner/work/_actions/tj-actions/changed-files/v29.0.4
    GITHUB_WORKSPACE: /home/runner/work/changed-files/changed-files
    INPUT_SHA: 6bf8ef4c6d1cd5f2cdde68ec29ac6700e59952b7
    INPUT_BASE_SHA: 51a64aae006b3ecdbb47283b231e14329c9a0d7e
    INPUT_PATH: .
    INPUT_USE_FORK_POINT: false

v29.0.3 output for setting base_sha

  # "Set base sha..."
  if [[ -n "" ]]; then
    BASE_SHA=$(git log --format="%H" --date=local --since="" --reverse | head -n 1)
    echo "::set-output name=base_sha::$BASE_SHA"
  elif [[ -n "" ]]; then
    echo "::set-output name=base_sha::"
  elif [[ "true" == "true" && "false" == "true" && "0b62c940036d721d5be1a3ed9fe5c3911b7448e9" != "0000000000000000000000000000000000000000" ]]; then
    LAST_REMOTE_COMMIT=$(git rev-parse $(git branch -r --sort=-committerdate | head -1))
    if [[ "9844fcda3d646bd6c955ca60da9d442befba8b5f" != "$LAST_REMOTE_COMMIT" ]]; then
      echo "::set-output name=base_sha::$LAST_REMOTE_COMMIT"
    fi
  elif [[ "true" == "true" && "false" != "true" && "0b62c940036d721d5be1a3ed9fe5c3911b7448e9" != "0000000000000000000000000000000000000000" ]]; then
    echo "::set-output name=base_sha::0b62c940036d721d5be1a3ed9fe5c3911b7448e9"
  fi

  # "Calculating the previous and current SHA..."
  bash $GITHUB_ACTION_PATH/diff-sha.sh
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
  env:
    GITHUB_SERVER_URL: https://github.com
    GITHUB_REPOSITORY: haodeon/changed-files
    GITHUB_BASE_REF: 
    GITHUB_HEAD_REF: 
    GITHUB_ACTION_PATH: /home/runner/work/_actions/tj-actions/changed-files/v29.0.3
    GITHUB_WORKSPACE: /home/runner/work/changed-files/changed-files
    INPUT_SHA: 9844fcda3d646bd6c955ca60da9d442befba8b5f
    INPUT_BASE_SHA: 0b62c940036d721d5be1a3ed9fe5c3911b7448e9
    INPUT_PATH: .
    INPUT_USE_FORK_POINT: false

Anything else?

No response

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