No such file or directory 'packed-refs' #1
Description
I received this problem while running tardis ... list. The workaround was to run git pack-refs inside the .git directory in the shared one (the /tmp/postgres in the example in the README).
node-git had the same problem and they solved it simply checking for the file packed-refs and running git pack-refs: creationix/node-git#1 (comment)
I suggest you to do the same.