Hello, Seem to be a bug. OSX 10.10.3 git 2.3.6 HFS+ case-sensitive How to reproduce : Step 1 : git clone https://github.com/begeric/FastParsers.git Step 2 : cd FastParsers/ Step 3 : git filter-branch --env-filter 'if [ 0 = 1 ]; then echo 0; fi' -- --all Result on OSX : Rewrite 65df7c5ac1ed956252b07b8c911ad7eba0a15c2b (206/206) Ref 'refs/heads/experiment' was rewritten Ref 'refs/remotes/origin/experiment' was rewritten WARNING: Ref 'refs/remotes/origin/experiment' is unchanged Ref 'refs/remotes/origin/master' was rewritten Result on Debian : Rewrite 65df7c5ac1ed956252b07b8c911ad7eba0a15c2b (206/206) WARNING: Ref 'refs/heads/experiment' is unchanged WARNING: Ref 'refs/remotes/origin/experiment' is unchanged WARNING: Ref 'refs/remotes/origin/experiment' is unchanged WARNING: Ref 'refs/remotes/origin/master' is unchanged Do you have any thoughts on this ? Thanks. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html