re-do the ppc64le image for CentOS 7.9.2009, this is pointing at the wrong ref

library/centos

@@ -19,7 +19,7 @@ arm32v7-GitCommit: 8022ae6d18ddf031b1b3a80549eeb46d1deb6dcd
 arm64v8-GitFetch: refs/heads/CentOS-7-aarch64
 arm64v8-GitCommit: 02ea5808a8a155bad28677dd5857c8d382027e14
 ppc64le-GitFetch: refs/heads/CentOS-7-ppc64le
-ppc64le-GitCommit: 35604e16d4d1c2c9195abdf39787508feb34c456
+ppc64le-GitCommit: a8e4f3da8300d18da4c0e5256d64763965e66810
 i386-GitFetch: refs/heads/CentOS-7-i386
 i386-GitCommit: 206003c215684a869a686cf9ea5f9697e577c546
 Architectures: amd64, arm64v8, arm32v7, ppc64le, i386