$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdav.git /var/lib/mock/f45-build-14819-464/root/chroot_tmpdir/scmroot/kf5-kdav
Cloning into '/var/lib/mock/f45-build-14819-464/root/chroot_tmpdir/scmroot/kf5-kdav'...
$ git fetch origin d4367be4f713dafc4bd4b9be3737a47700b7e028:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdav
 * [new ref]         d4367be4f713dafc4bd4b9be3737a47700b7e028 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4367be Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild