$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcalendarcore.git /var/lib/mock/f40-build-2198743-51704/root/chroot_tmpdir/scmroot/kf6-kcalendarcore
Cloning into '/var/lib/mock/f40-build-2198743-51704/root/chroot_tmpdir/scmroot/kf6-kcalendarcore'...
$ git fetch origin fbe117cd2ad972c6a21a0df5f89ee2242205dd0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcalendarcore
 * [new ref]         fbe117cd2ad972c6a21a0df5f89ee2242205dd0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbe117c 5.247.0