$ git clone -n https://src.fedoraproject.org/rpms/k3b.git /var/lib/mock/f40-build-2664564-67065/root/chroot_tmpdir/scmroot/k3b
Cloning into '/var/lib/mock/f40-build-2664564-67065/root/chroot_tmpdir/scmroot/k3b'...
$ git fetch origin 310e270ef5e32573f2ea4a891040b345054c9ad6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/k3b
 * [new ref]         310e270ef5e32573f2ea4a891040b345054c9ad6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 310e270 24.02.1