Created
March 3, 2012 19:14
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Split a subtree of a git repository into a separate repo.
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######################################################### | |
# | |
# classes is a git repository with many class projects | |
# I want to split one of those projects into its own repo | |
# and I want preserve the commit history | |
# | |
# The super top-level repo is classes.git | |
# Within classes.git is a sub-directory "networks/project2" | |
# we want to create a new repository with just the history of | |
# "networks/project2" | |
# | |
######################################################### | |
# the subtree | |
SUBDIR = "networks/project2" | |
# the top level git repository | |
SUPER_REPO = "~/projects/classes.git" | |
# new project name | |
NEW_REPO = "project2.git" | |
# first clone the super class repo, because we will be removing all other commits | |
# that are not related to subtree | |
git clone $SUPER_REPO $NEW_REPO | |
# cd into new repository clone | |
cd $NEW_REPO | |
# now filter-branch and remove all history unrelated to networks/project2 | |
git filter-branch --prune-empty --subdirectory-filter $SUBDIR master | |
# now all that remains is commit history of sub-directory |
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