Shell script to create a git bundle including changed LFS files

create_lfs_bundle.sh

#!/bin/sh

# This script creates a bundle of git commits between START and END.
# It also tars the lfs files that changed in those commits.
# When you unbundle on the receiving side you should untar the LFS tar *before*
# running 'git pull' on the bundle file.
# Note that this is just an example script that doesn't do error checking, and
# also doesn't account for submodules, etc. YMMV

# Start and end commits of bundle
START="master~50"
END="master"
# Normal git bundle file
BUNDLE_FILE="mybundle.bundle"
# Tar file with required lfs files
LFS_FILE="mybundle_lfs.tar"


# Create normal git bundle between START and END commits
git bundle create ${BUNDLE_FILE} ${START}..${END} --

# Create tmp file with list of lfs files to put in tar
FILES_LIST=`mktemp`

# Path where lfs objects are stored
lfsobjpath=".git/lfs/objects"

# ls-files returns LFS files changed between START and END commit. We then convert hashes to file paths in .git/lfs/objects directory
git lfs ls-files --long ${START} ${END} | awk '{ print $1 }' | sed -r 's_^([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]+)_'$lfsobjpath'/\1/\2/\1\2\3_' >> $FILES_LIST

# Create tar archive with lfs files
tar --files-from=$FILES_LIST -cf ${LFS_FILE}

# Remove temporary file
rm $FILES_LIST