get_sha1_commit  1710 builtin/am.c   	if (!get_sha1_commit("HEAD", parent)) {
get_sha1_commit    62 builtin/commit-tree.c 			if (get_sha1_commit(argv[i], sha1))
get_sha1_commit  1056 cache.h        extern int get_sha1_commit(const char *str, unsigned char *sha1);