Memory corruption when rebasing with git version 1.8.1.5 on arch

Hi im running arch linux and core/glibc 2.17-3

When i try to rebase with:

git clonehttps://github.com/owncloud/core.git cd core/ git pull --rebasehttps://github.com/PatrickHeller/core.git master

I'm getting:

$ git pull --rebasehttps://github.com/PatrickHeller/core.git  master
remote: Counting objects: 5, done.
remote: Compressing objects: 100% (1/1), done.
remote: Total 3 (delta 2), reused 3 (delta 2)
Unpacking objects: 100% (3/3), done.
  Fromhttps://github.com/PatrickHeller/core
   * branch            master     -> FETCH_HEAD
First, rewinding head to replay your work on top of it...
Applying: distinguish between touch and write
Applying: remove debug output
*** Error in `git': malloc(): memory corruption: 0x0000000000be14e0 ***

Using valgrind gives me:

$ valgrind /usr/bin/git pull --rebasehttps://github.com/PatrickHeller/core.git  master
==5995== Memcheck, a memory error detector
==5995== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==5995== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==5995== Command: /usr/bin/git pull --rebasehttps://github.com/PatrickHeller/core.git  master
==5995==
remote: Counting objects: 5, done.
remote: Compressing objects: 100% (1/1), done.
remote: Total 3 (delta 2), reused 3 (delta 2)
Unpacking objects: 100% (3/3), done.
  Fromhttps://github.com/PatrickHeller/core
   * branch            master     -> FETCH_HEAD
First, rewinding head to replay your work on top of it...
Applying: distinguish between touch and write
Applying: remove debug output
*** Error in `git': malloc(): memory corruption: 0x00000000027f14e0 ***

^C==5995== ==5995== HEAP SUMMARY: ==5995== in use at exit: 1,076 bytes in 11 blocks ==5995== total heap usage: 53 allocs, 42 frees, 11,038 bytes allocated ==5995== ==5995== LEAK SUMMARY: ==5995== definitely lost: 0 bytes in 0 blocks ==5995== indirectly lost: 0 bytes in 0 blocks ==5995== possibly lost: 0 bytes in 0 blocks