git gc - out of memory

My bare repository is on an OpenBSD machine.
I was unaware of the importance of git gc until today
after investigating a problem with "git pull".
So there hasn't been run git gc on the repository ever.

The biggest file in the repository is a 45 mb file.
The repository size is near 2 gb.

What can I do?

$ git gc
Counting objects: 5934, done.
warning: suboptimal pack - out of memory
fatal: Out of memory, malloc failed8)
error: failed to run repack
$ git --version
git version 1.6.5.2
$ uname -a
OpenBSD amiga.opcoders.com 4.3 GENERIC#698 i386
$ ulimit -a
time(cpu-seconds)    unlimited
file(blocks)         unlimited
coredump(blocks)     unlimited
data(kbytes)         524288
stack(kbytes)        4096
lockedmem(kbytes)    662576
memory(kbytes)       1985524
nofiles(descriptors) 128
processes            64
$ du -ks myrepository.git
1859538 myrepository.git
$



Below is the "git pull" problem I'm having. I think its caused
by the former problem. When pulling it dies because of malloc failure.

prompt> git pull
remote: Counting objects: 280, done.
remote: fatal: Out of memory, malloc failed
error: git upload-pack: git-pack-objects died with error.
fatal: git upload-pack: aborting due to possible repository corruption
on the remote side.
remote: aborting due to possible repository corruption on the remote side.
fatal: protocol error: bad pack header
prompt> git --version
git version 1.6.5.2
prompt> uname -a
Darwin pidgin.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15
16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386 i386
prompt> sw_vers
ProductName:    Mac OS X
ProductVersion: 10.5.8
BuildVersion:   9L31a
prompt>


Kind regards
Simon Strandgaard - http://gdtoolbox.com/