问题
I had the same question as asked here: New git repository in root directory to subsume an exist repository in a sub-directory
I followed this answer here: New git repository in root directory to subsume an exist repository in a sub-directory
Now, gitk --all shows two histories: one culminating in the current master, and one named original/refs/heads/master.
I don\'t know what this second history is, or how to remove it from the repo. I don\'t need two histories in my repository.
How do I get rid of it?
To reproduce yourself:
mkdir -p project-root/path/to/module
cd project-root/path/to/module
mkdir dir1 dir2 dir3
for dir in * ; do touch $dir/source-file-$dir.py ; done
git init
git add .
git commit -m \'Initial commit\'
Now we have the original poster\'s problem. Let\'s move the root of the git repo to project-root using the answer linked above:
git filter-branch --tree-filter \'mkdir -p path/to/module ; git mv dir1 dir2 dir3 path/to/module\' HEAD
rm -rf path
cd ../../../ # Now PWD is project-root
mv path/to/module/.git .
git reset --hard
Now, see my current problem:
gitk --all &
git show-ref
How do I get rid of refs/original/heads/master and all associated history?
回答1:
refs/original/* is there as a backup, in case you mess up your filter-branch. Believe me, it's a really good idea.
Once you've inspected the results, and you're very confident that you have what you want, you can remove the backed up ref:
git update-ref -d refs/original/refs/heads/master
or if you did this to many refs, and you want to wipe it all out:
git for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git update-ref -d
(That's taken directly from the filter-branch manpage.)
This doesn't apply to you, but to others who may find this: If you do a filter-branch which removes content taking up significant disk space, you might also want to run git reflog expire --expire=now --all and git gc --prune=now to expire your reflogs and delete the now-unused objects. (Warning: completely, totally irreversible. Be very sure before you do it.)
回答2:
And if you're in Windows PowerShell:
git for-each-ref --format="%(refname)" refs/original/ | foreach-object -process { git update-ref -d $_ }
回答3:
filter-branch keeps backups so repository need to clean up reflogs and garbage collect. Make sure that have no need in this backups before deletion:
rm -Rf .git/refs/original
git gc --aggressive --prune=now
来源：https://stackoverflow.com/questions/7654822/remove-refs-original-heads-master-from-git-repo-after-filter-branch-tree-filte