$ git clone -n https://src.fedoraproject.org/rpms/k3b.git /var/lib/mock/f40-build-2048903-49008/root/chroot_tmpdir/scmroot/k3b
Cloning into '/var/lib/mock/f40-build-2048903-49008/root/chroot_tmpdir/scmroot/k3b'...
$ git fetch origin fb3390812c0c6ae98341bff060034de09b807650:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/k3b
 * [new ref]         fb3390812c0c6ae98341bff060034de09b807650 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb33908 23.08.2