Shallow-cloning an SVN repository in Git

git_svn_shallow_clone.sh

function git_svn_shallow_clone() {
    # Shallowly clones an SVN repository using `git svn`.
    #
    # Example: Clone directly into the CWD.
    # Note: if your connection fails midway through the cloning, you can pick up from
    # where you left off by simply invoking the clone function again. Neat, right?
    # $ git_svn_shallow_clone <url> .
    # 
    # You may need to run this in your cloned folder if you need to resume cloning from
    # an interrupted connection.
    # $ git checkout master 

    local repo_url="${1:?error: expected invocation of the form '<command> <repo_url> [<clone_directory> <other options for `git clone`>]'}"
    shift
    local target_dir="${1:-${repo_url##*/}}"
    shift
    local repo_trunk="$repo_url/trunk"
    echo "Making a shallow clone of $repo_trunk into folder $target_dir..."
    local revision="$(svn info "$repo_trunk" | awk '/^Last Changed Rev:/ { print $4 }')"
    echo "  Cloning last changed revision $revision"
    git svn clone --stdlayout -r"$revision:HEAD" "$repo_url" "$target_dir" "$@" && pushd "$target_dir" > /dev/null && git reset --hard && popd > /dev/null
}

# TROUBLESHOOTING
# * I'm not sure why -s hasn't worked for me at some points, but it HAS given
#   different (failing) behavior than --stdlayout in my most recent testing.
# * The repo_url MUST be the root of the standard SVN repo layout.
# * The revision MUST be part of the history of the repo_url you specify.
#
# For ALL of the issues above, the only indication that something is wrong is
# that git will check out an empty repository. To start over, you have to rm -r
# .git.

git_svn_shallow_init.sh

# TROUBLESHOOTING
# Same rules as above apply:
# * The repo_url MUST be the root of the standard SVN repo layout.
# * The revision MUST be part of the history of the repo_url you specify.
git svn init --stdlayout "$repo_url"
# You can simply rerun this command if your connection fails, for some reason. 
git svn fetch -r"$revision:HEAD"