$ git clone -n https://src.fedoraproject.org/rpms/kf6-purpose.git /var/lib/mock/f40-build-2218516-52601/root/chroot_tmpdir/scmroot/kf6-purpose
Cloning into '/var/lib/mock/f40-build-2218516-52601/root/chroot_tmpdir/scmroot/kf6-purpose'...
$ git fetch origin 0a110214c9cea350bdceb236c92fd857092dd18b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-purpose
 * [new ref]         0a110214c9cea350bdceb236c92fd857092dd18b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a11021 Enable KAccounts integration