X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=refs.c;h=b8fcb98dad976c529dcccbaf592f567931b9a360;hb=ee34518d629331dadd58b1a75294369d679eda8b;hp=d2aec73edcbe06cf63009ac7dd85fa53b6c995b9;hpb=06d900cf28117ad5260335ea9ab7533f223320bf;p=git.git

diff --git a/refs.c b/refs.c
index d2aec73e..b8fcb98d 100644
--- a/refs.c
+++ b/refs.c
@@ -345,6 +345,11 @@ int check_ref_format(const char *ref)
 		if (!ch) {
 			if (level < 2)
 				return -1; /* at least of form "heads/blah" */
+
+			/* do not allow ref name to end in "HEAD" */
+			if (cp - ref > 4 && !strcmp(cp - 4, "HEAD"))
+				return -1;
+
 			return 0;
 		}
 	}