$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcrash.git /var/lib/mock/f40-build-2198130-51688/root/chroot_tmpdir/scmroot/kf6-kcrash
Cloning into '/var/lib/mock/f40-build-2198130-51688/root/chroot_tmpdir/scmroot/kf6-kcrash'...
$ git fetch origin 6de5f9a54354b7adbb853bba69b54985720bc9d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcrash
 * [new ref]         6de5f9a54354b7adbb853bba69b54985720bc9d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6de5f9a 5.247.0