$ git clone -n https://src.fedoraproject.org/flatpaks/kalm /var/tmp/koji/tasks/7410/131827410/kalm
Cloning into '/var/tmp/koji/tasks/7410/131827410/kalm'...
$ git fetch origin 2897ba19ae0b04919115337e089bf38581f9483a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/flatpaks/kalm
 * [new ref]         2897ba19ae0b04919115337e089bf38581f9483a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2897ba1 F42