Add required ref argument to pipeline trigger

Author: christopher-dG

.github/workflows/rebuild.yml

@@ -18,6 +18,7 @@ jobs:
           curl \
             -X POST \
             -F "token=$GITLAB_TOKEN" \
+            -F "ref=master" \
             "$GITLAB_TRIGGER"
   Manual rebuild:
     if: github.event_name == 'issue_comment' && startsWith(github.event.comment.body, '!rebuild')
@@ -30,6 +31,7 @@ jobs:
           curl \
             -X POST \
             -F "token=$GITLAB_CI_TOKEN" \
+            -F "ref=master" \
             -F "variables[FOLDER]=$folder" \
             -F "variables[FILE]=$file" \
             "$GITLAB_TRIGGER"