$ git clone -n https://src.fedoraproject.org/rpms/k3b.git /var/lib/mock/f40-build-2199546-51748/root/chroot_tmpdir/scmroot/k3b
Cloning into '/var/lib/mock/f40-build-2199546-51748/root/chroot_tmpdir/scmroot/k3b'...
$ git fetch origin 6b3f6ae2cdffc807f27dd1f97638a0fcdb9b11d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/k3b
 * [new ref]         6b3f6ae2cdffc807f27dd1f97638a0fcdb9b11d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b3f6ae 24.01.85