git-svn: what's the equivalent to `svn switch --relocate`?

Question

An svn repository I\'m mirroring through git-svn has changed URL.

In vanilla svn you\'d just do svn switch --relocate old_url_base new_url_base.

Answer 1

git filter-branch

This script, taken from a blog entry, has worked for me. Supply old and new repo URL as parameter, just like for svn switch --relocate.

The script calls git filter-branch to replace Subversion URLs in the git-svn-id in the commit messages, updates .git/config, and also updates git-svn metadata by recreating it using git svn rebase. While git svn clone might be the more robust solution, the filter-branch approach works much faster for huge repositories (hours vs. days).

#!/bin/sh

# Must be called with two command-line args.
# Example: git-svn-relocate.sh http://old.server https://new.server
if [ $# -ne 2 ]
then
  echo "Please invoke this script with two command-line arguments (old and new SVN URLs)."
  exit $E_NO_ARGS
fi

# Prepare URLs for regex search and replace.
oldUrl=`echo $1 | awk '{gsub("[\\\.]", "\\\\\\\&");print}'`
newUrl=`echo $2 | awk '{gsub("[\\\&]", "\\\\\\\&");print}'`

filter="sed \"s|^git-svn-id: $oldUrl|git-svn-id: $newUrl|g\""
git filter-branch --msg-filter "$filter" -- --all

sed -i.backup -e "s|$oldUrl|$newUrl|g" .git/config

rm -rf .git/svn
git svn rebase