$ git clone -n https://src.fedoraproject.org/rpms/kf6-kpackage.git /var/lib/mock/f40-build-775088-128012/root/chroot_tmpdir/scmroot/kf6-kpackage
Cloning into '/var/lib/mock/f40-build-775088-128012/root/chroot_tmpdir/scmroot/kf6-kpackage'...
$ git fetch origin 4fcbef6b7cdae0b89fe354c68872d10f6d610e22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kpackage
 * [new ref]         4fcbef6b7cdae0b89fe354c68872d10f6d610e22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fcbef6 5.248.0