POST提交钩子的shell脚本给出了不是一个Git存储库错误

我已经编写了一个post commit钩子,它要求创建虚拟环境,以便python脚本在提交发生时运行。

以下是我的剧本:

#!/bin/bash
# Teamcity-build trigger

echo "Executing post-commit hook"

BASEDIR=$(dirname $(readlink -f $0))
VENV=venv
ACTIVATE=$VENV/bin/activate
STATUS=false
CIDIR=teamcity

# Username
machine=$(uname -n)

echo "Notifying Teamcity Server to execute a Build on " $machine
# Logic to check if commit is done or merged to a particular branch / master branch

cd $BASEDIR
# Change directory to parent directory, since current directory is `.git/hooks/`
cd ../..
# Go in teamcity directory
cd $CIDIR

# Check if venv folder exists, if it does not then create it
if [ ! -d "$VENV" ]; then
  # Control will enter here if $VENV doesn't exist.
  virtualenv -p python $VENV
  STATUS=true
fi

# Source virtual environment
source $ACTIVATE

# Install required dependencies if not yet installed
if [ "$STATUS" = true ]; then
    # if status is true, means need to install all the required libraries
    pip install --upgrade pip
    pip install -r requirements.txt
fi

# check current git branch
# $(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')
BRANCH=$(git rev-parse --symbolic-full-name --abbrev-ref HEAD)
if [ "$BRANCH" = "rahul" ]; then
    # if branch is master, then only proceed.
    # Start processing teamcity jobs
    python last_dir_processed.py
else
    echo "Current Branch $BRANCH, Nothing to execute."
fi

# Deactivate virtual environment
deactivate

在第43行,

BRANCH=$(git rev-parse --symbolic-full-name --abbrev-ref HEAD)

脚本试图知道当前分支的名称。

但它给出了如下错误:

fatal: Not a git repository: '.git'

我在那行之前用pwd命令检查了文件夹路径,它显示 .git 文件夹存在。

另外,当我手动运行以下命令时,它也工作了:

git rev-parse --symbolic-full-name --abbrev-ref HEAD

这给了我一个当前的分支名称。

编辑: 以下是我的目录结构:

--root_dir
    --teamcity
        -last_dir_processed.py
    --.git
        --hooks
            -post-commit

因此,理想的是脚本应该正确执行,但是它仍然给出错误。不知道原因是什么。