fix: simplify updater to @mosaic/mosaic only, add explicit tea repo/login flags (#388)

packages/mosaic/framework/tools/git/pr-merge.sh

@@ -89,6 +89,8 @@ if [[ "$SKIP_QUEUE_GUARD" != true ]]; then
 fi
 
 PLATFORM=$(detect_platform)
+OWNER=$(get_repo_owner)
+REPO=$(get_repo_name)
 
 case "$PLATFORM" in
     github)
@@ -97,8 +99,7 @@ case "$PLATFORM" in
         eval "$CMD"
         ;;
     gitea)
-        # tea pr merge syntax
-        CMD="tea pr merge $PR_NUMBER --style squash"
+        CMD="tea pr merge $PR_NUMBER --style squash --repo $OWNER/$REPO --login ${GITEA_LOGIN:-mosaicstack}"
 
         # Delete branch after merge if requested
         if [[ "$DELETE_BRANCH" == true ]]; then