diff --git a/.github/bot-pr-base.sh b/.github/bot-pr-base.sh
index cdb0787c410..b261bf74324 100644
--- a/.github/bot-pr-base.sh
+++ b/.github/bot-pr-base.sh
@@ -59,6 +59,27 @@ bot_error() {
   exit 1
 }
 
+bot_get_all_changed_files() {
+  local pr_url="$1"
+  local pr_files=""
+  local page="1"
+  while true; do
+    # this api allows 100 items per page
+    # github action uses `bash -e`. The last empty page will leads jq error, use `|| :` to ignore the error.
+    local pr_page_files=$(api_get "$pr_url/files?&per_page=100&page=${page}" | jq -er '.[] | .filename' || :)
+    if [ "${pr_page_files}" = "" ]; then
+      break
+    fi
+    if [ ! "${pr_files}" = "" ]; then
+      # add the same new line format as jq output
+      pr_files="${pr_files}"$'\n'
+    fi
+    pr_files="${pr_files}${pr_page_files}"
+    page=$(( page + 1 ))
+  done
+  echo "${pr_files}"
+}
+
 # collect info on the user that invoked the bot
 echo -n "Collecting information on triggering user"
 USER_JSON=$(api_get $USER_URL)
diff --git a/.github/bot-pr-format-base.sh b/.github/bot-pr-format-base.sh
index 8d213dcfe69..298f061cc87 100644
--- a/.github/bot-pr-format-base.sh
+++ b/.github/bot-pr-format-base.sh
@@ -7,23 +7,7 @@ FORMAT_HEADER_REGEX='^(benchmark|core|cuda|hip|include/ginkgo/core|omp|reference
 FORMAT_REGEX='^(common|examples|test_install)/'
 
 echo "Retrieving PR file list"
-PR_FILES=""
-PAGE="1"
-while true; do
-  # this api allows 100 items per page
-  # github action uses `bash -e`. The last empty page will leads jq error, use `|| :` to ignore the error.
-  PR_PAGE_FILES=$(api_get "$PR_URL/files?&per_page=100&page=${PAGE}" | jq -er '.[] | .filename' || :)
-  if [ "${PR_PAGE_FILES}" = "" ]; then
-    break
-  fi
-  echo "Retrieving PR file list - ${PAGE} pages"
-  if [ ! "${PR_FILES}" = "" ]; then
-    # add the same new line format as jq output
-    PR_FILES="${PR_FILES}"$'\n'
-  fi
-  PR_FILES="${PR_FILES}${PR_PAGE_FILES}"
-  PAGE=$(( PAGE + 1 ))
-done
+PR_FILES=$(bot_get_all_changed_files ${PR_URL})
 NUM=$(echo "${PR_FILES}" | wc -l)
 echo "PR has ${NUM} changed files"
 
diff --git a/.github/label.sh b/.github/label.sh
index 860e520720c..8849f53d01c 100755
--- a/.github/label.sh
+++ b/.github/label.sh
@@ -3,23 +3,7 @@
 source .github/bot-pr-base.sh
 
 echo "Retrieving PR file list"
-PR_FILES=""
-PAGE="1"
-while true; do
-  # this api allows 100 items per page
-  # github action uses `bash -e`. The last empty page will leads jq error, use `|| :` to ignore the error.
-  PR_PAGE_FILES=$(api_get "$PR_URL/files?&per_page=100&page=${PAGE}" | jq -er '.[] | .filename' || :)
-  if [ "${PR_PAGE_FILES}" = "" ]; then
-    break
-  fi
-  echo "Retrieving PR file list - ${PAGE} pages"
-  if [ ! "${PR_FILES}" = "" ]; then
-    # add the same new line format as jq output
-    PR_FILES="${PR_FILES}"$'\n'
-  fi
-  PR_FILES="${PR_FILES}${PR_PAGE_FILES}"
-  PAGE=$(( PAGE + 1 ))
-done
+PR_FILES=$(bot_get_all_changed_files ${PR_URL})
 NUM=$(echo "${PR_FILES}" | wc -l)
 echo "PR has ${NUM} changed files"