$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcalendarcore.git /var/lib/mock/f40-build-1258331-23032/root/chroot_tmpdir/scmroot/kf5-kcalendarcore
Cloning into '/var/lib/mock/f40-build-1258331-23032/root/chroot_tmpdir/scmroot/kf5-kcalendarcore'...
$ git fetch origin 0cc6aa5f7f7d707abf8f6465477fe3ab559fee31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcalendarcore
 * [new ref]         0cc6aa5f7f7d707abf8f6465477fe3ab559fee31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cc6aa5 5.116.0