Update CI base branch

Signed-off-by: Matthew Heon <[email protected]>

Author: mheon

Makefile

@@ -28,7 +28,7 @@ DESTDIR ?=
 EPOCH_TEST_COMMIT ?= $(shell git merge-base $${DEST_BRANCH:-main} HEAD)
 HEAD ?= HEAD
 PROJECT := github.com/containers/podman
-GIT_BASE_BRANCH ?= origin/main
+GIT_BASE_BRANCH ?= origin/v4.2
 LIBPOD_INSTANCE := libpod_dev
 PREFIX ?= /usr/local
 BINDIR ?= ${PREFIX}/bin