$ git clone -n https://src.fedoraproject.org/rpms/dolphin.git /var/lib/mock/f40-build-2442751-61060/root/chroot_tmpdir/scmroot/dolphin
Cloning into '/var/lib/mock/f40-build-2442751-61060/root/chroot_tmpdir/scmroot/dolphin'...
$ git fetch origin dec24872c4f79a963ffbbd01d92c6eb02d8a0655:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dolphin
 * [new ref]         dec24872c4f79a963ffbbd01d92c6eb02d8a0655 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dec2487 Rebuild (qt6)