$ git clone -n https://src.fedoraproject.org/rpms/sdubby.git /var/lib/mock/f39-build-1923765-43009/root/chroot_tmpdir/scmroot/sdubby
Cloning into '/var/lib/mock/f39-build-1923765-43009/root/chroot_tmpdir/scmroot/sdubby'...
$ git fetch origin a1471ab43e366ab23d8cd91ed650175f13d41776:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sdubby
 * [new ref]         a1471ab43e366ab23d8cd91ed650175f13d41776 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1471ab BZ 2250498 Add hacky grubby = 8.41 line to assure that anaconda-core, as used by initial-setup-gui, for xfce/etc is satisfied