Invoke git-log if not used as a pipe.
tree1dd6e2a75cfdb2882c6c34f0d4cd5c1d9b8cc1d1
-rw-r--r-- 17987 COPYING
-rw-r--r-- 1284 README
-rw-r--r-- 6304 README.html
-rwxr-xr-x 10602 git2cl