http://akrabat.com/computing/migrating-to-bitbucket-from-subversion/

svn2bitbucket.sh

#!/bin/sh

# Inspired by :
# * http://blogs.atlassian.com/2012/01/moving-confluence-from-subversion-to-git/
# * http://john.albin.net/git/git-svn-migrate
# * http://blog.woobling.org/2009/06/git-svn-abandon.html
# * http://stackoverflow.com/questions/10637378/how-do-i-convert-a-bare-git-repository-into-a-normal-one-in-place

# usage: svn2git.sh REPO
# NOTE that we assume that REPO lives underneath SVN_URL and is a standard subversion layout

# SET THESE CORRECTLY!
USERNAME=my_bitbucket_username
PASSWORD=my_bitbucket_password
AUTHORS_TEXT_FILE=~/authors.txt
SVN_URL=http://svn.example.com/svn


REPO=$1
if [ -z "$REPO" ]; then
    echo ""
    echo "USAGE: svn2git.sh {repo} [{delete_repo_first =1|0}]"
    echo ""
    exit;
fi
DELETE_REPO_FIRST=$2
if [ -z "$DELETE_REPO_FIRST" ]; then
    DELETE_REPO_FIRST=0
fi

BASE_DIR=/tmp
TEMP_REPO=${REPO}_tmp
BARE_REPO=${REPO}.git

echo ""
if [ $DELETE_REPO_FIRST -eq 1 ]; then
    echo "Delete repository on BitBucket first"
    curl -L --silent -X DELETE -u ${USERNAME}:${PASSWORD} https://api.bitbucket.org/1.0/repositories/${USERNAME}/${REPO}
fi
echo "Create repository on BitBucket"
r=`curl -L --silent -X POST -u ${USERNAME}:${PASSWORD} https://api.bitbucket.org/1.0/repositories/ -d name=${REPO} -d scm=git`
t=${r:0:11}
if [ "${r:0:11}" = "Bad Request" ]; then
    echo ${r}
    exit 1
fi

echo ""
echo "Clone from subversion into temporary repository"
cd ${BASE_DIR}
git svn clone --stdlayout --no-metadata -A ${AUTHORS_TEXT_FILE} ${SVN_URL}/${REPO}/ ${TEMP_REPO}

if [ "$?" -ne "0" ]; then
    echo "ERROR: Failed to convert $REPO from subversion to git"
    exit 1
fi

echo ""
echo "Create bare repository"
git init --bare ${BARE_REPO}
cd ${BASE_DIR}/${BARE_REPO}
git symbolic-ref HEAD refs/heads/trunk

echo ""
echo "Push temporary repository into bare one"
cd ${BASE_DIR}/${TEMP_REPO}
git remote add bare ${BASE_DIR}/${BARE_REPO}
git config remote.bare.push 'refs/remotes/*:refs/heads/*'
git push bare

echo ""
echo "Rename 'trunk' to 'master' as that's the git norm"
cd ${BASE_DIR}/${BARE_REPO}
git branch -m trunk master


echo ""
echo "Clean up branches and tags"
git for-each-ref --format='%(refname)' refs/heads/tags |
cut -d / -f 4 |
while read ref
do
  git tag "$ref" "refs/heads/tags/$ref";
  git branch -D "tags/$ref";
done

echo ""
echo "Convert to 'normal' repository from bare"
mkdir .git
mv * .git
git config --local --bool core.bare false


echo ""
echo "Push branches & tags to BitBucket"
git remote add upstream git@bitbucket.org:${USERNAME}/${REPO}
git push --all upstream
git push --tags upstream


echo ""
echo "Clean up"
cd ${BASE_DIR}
rm -rf ${BARE_REPO}
rm -rf ${TEMP_REPO}

echo ""
echo "All done"