I made chroot jail using script make_chroot_jail.sh, then added git by copying /usr/bin/git*, all libraries that these binaries need and /usr/share/git-core now i can init, clone commit, push and so on in jail, but when i type git log it prints nothing( could somebody help me or say where to look for?
When constructing a chroot, try running the commands with strace -f and look for abnormally failing system calls, missing files etc. strace -f <command> 2>&1 |grep ... is your friend.
Needless to say, constructing a chroot with a complex software is not for the faintest of hearts...