diff --git a/src/scripts/merge_tools/gitmerge.sh b/src/scripts/merge_tools/gitmerge.sh
index bbf3e293f2..1c2032d58a 100755
--- a/src/scripts/merge_tools/gitmerge.sh
+++ b/src/scripts/merge_tools/gitmerge.sh
@@ -1,19 +1,16 @@
 #!/usr/bin/env sh
 
-# usage: ./gitmerge.sh <clone_dir> <branch-1> <branch-2> <strategy> [no-git-merge-abort]
+# usage: ./gitmerge.sh <clone_dir> <branch-1> <branch-2> <strategy>
 # <clone_dir> must contain a clone of a repository.
 # <strategy> is arguments to `git merge`, including -s and possibly -X.
 # Merges branch2 into branch1, in <clone_dir>, using merge strategy <strategy>.
-# For merge success, return code is 0.
-# For merge failure:
-#  * return code is 1.
-#  * outputs "Conflict" and aborts the merge,
-#    unless a non-empty 5th command-line argument is provided.
+# Return code is 0 for merge success, 1 for merge failure.
+# For merge failure, also outputs "Conflict" and aborts the merge.
 
 set -o nounset
 
-if [ "$#" -ne 4 ] && [ "$#" -ne 5 ]; then
-  echo "Usage: $0 CLONE_DIR BRANCH1 BRANCH2 STRATEGY [no-git-merge-abort]" >&2
+if [ "$#" -ne 4 ]; then
+  echo "Usage: $0 CLONE_DIR BRANCH1 BRANCH2 STRATEGY" >&2
   exit 1
 fi
 
@@ -21,8 +18,6 @@ clone_dir=$1
 branch1=$2
 branch2=$3
 strategy=$4
-# If this variable is non-empty, don't output "Conflict" or run `git merge --abort`.
-no_git_merge_abort=$5
 
 # perform merge
 cd "$clone_dir" || exit 1
@@ -34,10 +29,8 @@ retVal=$?
 
 # report conflicts
 if [ $retVal -ne 0 ]; then
-    if [ -z "$no_git_merge_abort" ] ; then
-        echo "Conflict"
-        git merge --abort
-    fi
+    echo "Conflict"
+    git merge --abort
 fi
 
 exit $retVal
diff --git a/src/scripts/merge_tools/gitmerge_ort.sh b/src/scripts/merge_tools/gitmerge_ort.sh
index d8a695734b..5870c56a91 100755
--- a/src/scripts/merge_tools/gitmerge_ort.sh
+++ b/src/scripts/merge_tools/gitmerge_ort.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s ort"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_ort_ignorespace.sh b/src/scripts/merge_tools/gitmerge_ort_ignorespace.sh
index ef1a5df5f8..53805e7418 100755
--- a/src/scripts/merge_tools/gitmerge_ort_ignorespace.sh
+++ b/src/scripts/merge_tools/gitmerge_ort_ignorespace.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s ort -Xignore-space-change"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_ort_imports.sh b/src/scripts/merge_tools/gitmerge_ort_imports.sh
index 87bfb15c05..b9ba8315f2 100755
--- a/src/scripts/merge_tools/gitmerge_ort_imports.sh
+++ b/src/scripts/merge_tools/gitmerge_ort_imports.sh
@@ -7,8 +7,14 @@ clone_dir=$1
 branch1=$2
 branch2=$3
 strategy="-s ort"
-if "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy" "no-git-merge-abort" ; then
-  exit
+"$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -e 0 ] ; then
+  exit 0
+fi
+
+cd "$clone_dir"
+"$MERGE_SCRIPTS_DIR"/resolve-import-conflicts
+if [ $? -ne 0 ] ; then
+  exit 1
 fi
 
-(cd "$clone_dir" && "$MERGE_SCRIPTS_DIR"/resolve-import-conflicts)
diff --git a/src/scripts/merge_tools/gitmerge_ort_imports_ignorespace.sh b/src/scripts/merge_tools/gitmerge_ort_imports_ignorespace.sh
index 5151e81037..d8118fa3e3 100755
--- a/src/scripts/merge_tools/gitmerge_ort_imports_ignorespace.sh
+++ b/src/scripts/merge_tools/gitmerge_ort_imports_ignorespace.sh
@@ -7,8 +7,13 @@ clone_dir=$1
 branch1=$2
 branch2=$3
 strategy="-s ort -Xignore-space-change"
-if "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy" "no-git-merge-abort" ; then
-  exit
+"$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -e 0 ] ; then
+  exit 0
 fi
 
-(cd "$clone_dir" && "$MERGE_SCRIPTS_DIR"/resolve-import-conflicts)
+cd "$clone_dir"
+"$MERGE_SCRIPTS_DIR"/resolve-import-conflicts
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_recursive_histogram.sh b/src/scripts/merge_tools/gitmerge_recursive_histogram.sh
index 6453c6e00e..afddba1160 100755
--- a/src/scripts/merge_tools/gitmerge_recursive_histogram.sh
+++ b/src/scripts/merge_tools/gitmerge_recursive_histogram.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s recursive -Xdiff-algorithm=histogram"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_recursive_ignorespace.sh b/src/scripts/merge_tools/gitmerge_recursive_ignorespace.sh
index 812d2dcd18..44de249969 100755
--- a/src/scripts/merge_tools/gitmerge_recursive_ignorespace.sh
+++ b/src/scripts/merge_tools/gitmerge_recursive_ignorespace.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s recursive -Xignore-space-change"
 "$MERGE_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_recursive_minimal.sh b/src/scripts/merge_tools/gitmerge_recursive_minimal.sh
index e7d916539a..7cf08a7dc3 100755
--- a/src/scripts/merge_tools/gitmerge_recursive_minimal.sh
+++ b/src/scripts/merge_tools/gitmerge_recursive_minimal.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s recursive -Xdiff-algorithm=minimal"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_recursive_myers.sh b/src/scripts/merge_tools/gitmerge_recursive_myers.sh
index f95f093ba7..035864ba4c 100755
--- a/src/scripts/merge_tools/gitmerge_recursive_myers.sh
+++ b/src/scripts/merge_tools/gitmerge_recursive_myers.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s recursive -Xdiff-algorithm=myers"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi
diff --git a/src/scripts/merge_tools/gitmerge_recursive_patience.sh b/src/scripts/merge_tools/gitmerge_recursive_patience.sh
index 77e5a8e449..619c0830a9 100755
--- a/src/scripts/merge_tools/gitmerge_recursive_patience.sh
+++ b/src/scripts/merge_tools/gitmerge_recursive_patience.sh
@@ -8,3 +8,6 @@ branch1=$2
 branch2=$3
 strategy="-s recursive -Xdiff-algorithm=patience"
 "$MERGE_SCRIPTS_DIR"/gitmerge.sh "$clone_dir" "$branch1" "$branch2" "$strategy"
+if [ $? -ne 0 ] ; then
+  exit 1
+fi