Script to convert a specific subversion path to git, ignoring other subversion paths and content. Not tested to handle merges, does not record commits with proper dates (historic dates in commit message). If you want all that there are better tools available.

SvnPathToGit.sh

#!/bin/bash
# Convert a subversion repository path to git
# Author: Peter Löfgren, Loftux AB

# The subversion path to export
URL="https://share-extras.googlecode.com/svn/trunk/Media Preview"
# First revision this path exists
STARTREV=2


svn co -r ${STARTREV} "${URL}" export
 
cd "$( dirname "$0" )/export"

if [ ! -f ".gitignore" ]; then
  echo .svn >> .gitignore
fi

if [ ! -d ".git" ]; then
	git init
	git add .
	git commit -m "Initial commit, export from ${URL}"
fi

localrev=$(( `svn info | grep Revision | awk '{print $2}'`+1 ))
remoterev=$((`svn info $( svn info | grep 'Root:' | awk -F': ' '{print $2}' ) | grep Revision | awk '{print $2}'`+1))
echo Updating from $localrev to  $remoterev
while [ $localrev -lt $remoterev ]; do
	echo `date "+%Y-%m-%d %H:%M"` Updating $localrev
	svn update -q -r $localrev
	loggmessage=`svn log -r $localrev`
	git add .
	git ls-files --deleted | xargs git rm
	git commit -m "${loggmessage:73}"
	let localrev=localrev+1 
done