Composer always reports files are changed

[M1ke]

Every time I try and move from a git branch with this package installed to one that does not have it, I get an error that files in the package have changed.

To test this I removed vendor/ and then ran composer install. This library is being required by lisachenko/go-aop-php which in turn was required by codeception/aspect-mock. This is the entry in composer.lock:

{
    "name": "jakubledl/dissect",
    "version": "1.0.x-dev",
    "source": {
        "type": "git",
        "url": "https://github.com/jakubledl/dissect.git",
        "reference": "112ee99f32b0884821f7df4b93ba922461dcf916"
    },
    "dist": {
        "type": "zip",
        "url": "https://api.github.com/repos/jakubledl/dissect/zipball/112ee99f32b0884821f7df4b93ba922461dcf916",
        "reference": "112ee99f32b0884821f7df4b93ba922461dcf916",
        "shasum": ""
    },
    "require": {
        "php": ">=5.3.3"
    },
    "require-dev": {
        "symfony/console": "~2.1"
    },
    "suggest": {
        "symfony/console": "for the command-line tool"
    },
    "bin": [
        "bin/dissect.php",
        "bin/dissect"
    ],
    "type": "library",
    "autoload": {
        "psr-0": {
            "Dissect": [
                "src/"
            ]
        }
    },
    "notification-url": "https://packagist.org/downloads/",
    "license": [
        "unlicense"
    ],
    "authors": [
        {
            "name": "Jakub Lédl",
            "email": "[email protected]"
        }
    ],
    "description": "Lexing and parsing in pure PHP",
    "homepage": "https://github.com/jakubledl/dissect",
    "keywords": [
        "ast",
        "lexing",
        "parser",
        "parsing"
    ],
    "time": "2013-01-15 19:48:58"
}

Immediately upon running composer install I cd vendor/jakubledl/dissect and run git status with this output:

On branch 1.0
Your branch is up-to-date with 'composer/1.0'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

    modified:   bin/dissect.php

However upon opening bin/dissect.php there are no changes noted (or at least none recognised by my diff tool).

Sadly I can't really suggest any further reasons why this might happening as it's never occured with another package and occurs every time I remove the package with this one, but I am submitting in case it's been spotted by anybody else.