LCJones and Brian Wolff: Thanks for taking the time to write a reply. The comments were useful. I am still trying to navigate through the extensions update. I do want to stick with git. Updating the extensions seems simple enough: $ cd ParserFunctions/ $ git pull $ git checkout origin/REL1_27 HEAD is now at d0a5d10... Creating new REL1_27 branch What has me confused is that on "https://.../thewiki/Special:Version" still shows the old 'ParserFunctions' version. I then tried... --- thewiki/extensions$ mv OLD__ParserFunctions/ ParserFunctions/ thewiki/extensions$ git clone https://gerrit.wikimedia.org/r/p/mediawiki/extensions/ParserFunctions.git thewiki/extensions$ ParserFunctions# git checkout origin/REL1_27 --- The last command -- gives me a result that reads HEAD is now at d0a5d10... Creating new REL1_27 branch Interesting is that "Special:Version" still shows the old 'ParserFunctions' version. I'm still missing something. I am fairly sure git pulled the newer extensions and I checked-out the right version... but an update is somehow missing. It looks like MediaWiki isn't finding the new extensions -- I'm trying to go to 1.27. https://www.mediawiki.org/wiki/Composer - talks of updating vendor.git. I did do that -- --- cd ...thewiki/vendor # git pull # git checkout origin/REL1_27 HEAD is now at f049e1a... Bump wikimedia/ip-set to 1.1.0 --- Is it is related to 'composer.local.json' - which is discussed in connection with 'Composer'? I did try creating a "composer.local.json" from the sample. https://www.mediawiki.org/wiki/Composer ??? I haven't wrapped my head about this. Any thoughts? Thanks, Michael