$ git clone -n https://src.fedoraproject.org/rpms/kf5-akonadi-calendar.git /var/lib/mock/f40-build-768933-125434/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar
Cloning into '/var/lib/mock/f40-build-768933-125434/root/chroot_tmpdir/scmroot/kf5-akonadi-calendar'...
$ git fetch origin ba69b4d3bf81893e85ba9782b089b0ba0c890d4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-akonadi-calendar
 * [new ref]         ba69b4d3bf81893e85ba9782b089b0ba0c890d4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba69b4d Split translation files into their subpackages