$ git clone -n https://src.fedoraproject.org/rpms/libcupsfilters.git /var/lib/mock/f40-build-783168-132738/root/chroot_tmpdir/scmroot/libcupsfilters
Cloning into '/var/lib/mock/f40-build-783168-132738/root/chroot_tmpdir/scmroot/libcupsfilters'...
$ git fetch origin 8a0da7cf53eb76a009ad50934ba45b3fabfa5024:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcupsfilters
 * [new ref]         8a0da7cf53eb76a009ad50934ba45b3fabfa5024 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a0da7c fix several issues reported in upstream