You need to activate three update sites in Fiji:
- https://sites.imagej.net/Mastodon-jungle
- https://sites.imagej.net/TomancakLab
- https://sites.imagej.net/Maarzt
(The "Maarzt" update site is not in the list of update sites. You need to add it manually by clicking “Add Unlisted Site”)
Also make sure not to activate too many other update sites.
Please follow the step-by-step instructions below, if you don't yet know how to activate update sites.
Start ImageJ Updater
Click Manage Update Sites:
Search the Mastodon update site and select it:
Search the TomancakLab update site and select it:
Next: Click “Add Unlisted Site”. A new almost empty line will appear in the table.
Please specify the URL: “https://sites.imagej.net/Maarzt/”
Change Name from “New” to “Maarzt” and select the new entry:
Click “Apply and Close”
Click “Apply Changes”
The final step is to restart Fiji, after this you should see an entry “Plugins > Mastodon Git > Download Shared Project” in the menu: