append_crc_len.sh: use git rev-parse instread of git log

Xiangfu Liu · Xiangfu Liu · commit ffad7133703d · 2011-09-16T10:44:02.000+08:00
diff --git a/src/append_crc_len.sh b/src/append_crc_len.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-REV=$(git log | head -n 1 | cut -b8-14)
+REV=$(git rev-parse HEAD | cut -b1-7)
 BOOT_CRC_BIN="boot.crc.${REV}.bin"
 
 CRC_LEN_TMP=`mktemp`
