document untagging

docs/koji/deletetag.md

@@ -18,18 +18,30 @@ Please update the clone of this repo on lxsoftadm01:
 [build@lxsoftadm01] git pull
 ```
 ## Untag packages
-If there are any packages using these tags, it is better to untag them before removing the tag from KOJI.
+If there are any packages using these tags, it is better to untag them before removing the tag from KOJI. To get the full list of tags use:
+```bash
+koji list-tags $DIST-*
+```
+where $DIST is to be replaced by the tag pattern to be removed.
+For each of these tags, check if there are any corresponding builds, eg
+```bash
+koji list-tagged $DIST-testing
+```
+Then untag each of the listed packages before proceeding with eg
+```bash
+koji untag $DIST-testing <package>
+```
+
 
 ## Remove the tag from koji
-From lxsoftadm01 remove all related tags from koji
+From lxsoftadm01 remove all related tags from koji, eg
 ```bash
-~ > ssh build@lxsoftadm01
 koji remove-tag $DIST-testing
 koji remove-tag $DIST-build
 koji remove-tag $DIST-qa
 koji remove-tag $DIST-stable
 
 ```
-where ```$DIST``` is to be replaced by the tag to be removed.
+where again ```$DIST``` is to be replaced by the tag to be removed.