clone mercurial repository, and using "fast-export" to convert it into git repository

hggit-clone.sh

#!/bin/sh
hg_remote=$1
project_path=$2

function usage() {
    echo "  Usage: ./hggit-clone.sh  <mercurial repository remote url>  <project path>"
    echo "Example: ./hggit-clone.sh  https://bitbucket.org/oojah/mosquitto  mosquitto"
}

# check hg_remote
if test "x$hg_remote" = "x"; then
    usage
    exit
fi

# check project_path
if test "x$project_path" = "x"; then
    usage
    exit
fi

# download fast-export and hg-project
git clone git://repo.or.cz/fast-export.git
hg clone $hg_remote hg_project

# create git project
mkdir -p $project_path
cd $project_path
git init

# fast-export hg -> git
../fast-export/hg-fast-export.sh -r ../hg_project

# remove useless files
git checkout HEAD
cd ..
rm -rf fast-export
rm -rf hg_project