$ git clone -n https://src.fedoraproject.org/rpms/akonadi-calendar.git /var/lib/mock/f42-build-864298-172280/root/chroot_tmpdir/scmroot/akonadi-calendar
Cloning into '/var/lib/mock/f42-build-864298-172280/root/chroot_tmpdir/scmroot/akonadi-calendar'...
$ git fetch origin f7656fa9bc36d5a8611d433ac03cdf6eb2e05fa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/akonadi-calendar
 * [new ref]         f7656fa9bc36d5a8611d433ac03cdf6eb2e05fa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7656fa 24.12.0