1 files changed, 4 insertions, 2 deletions
diff --git a/lib/git.js b/lib/git.js
index 1cf9121d..d431ea2d 100644
--- a/lib/git.js
+++ b/lib/git.js
@@ -6,6 +6,8 @@ var Git = function(faker) {
   var self = this;
   var f = faker.fake;
 
+  var hexChars = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];
+
   /**
    * branch
    *
@@ -58,7 +60,7 @@ var Git = function(faker) {
     var commit = "";
 
     for (var i = 0; i < 40; i++) {
-      commit += faker.random.alphaNumeric();
+      commit += faker.random.arrayElement(hexChars);
     }
 
     return commit;
@@ -73,7 +75,7 @@ var Git = function(faker) {
     var shortSha = "";
 
     for (var i = 0; i < 7; i++) {
-      shortSha += faker.random.alphaNumeric();
+      shortSha += faker.random.arrayElement(hexChars);
     }
 
     return shortSha;