$ git clone -n https://src.fedoraproject.org/rpms/cereal.git /var/lib/mock/f40-build-1992452-43599/root/chroot_tmpdir/scmroot/cereal
Cloning into '/var/lib/mock/f40-build-1992452-43599/root/chroot_tmpdir/scmroot/cereal'...
$ git fetch origin a50e4089f219ee0d89169143a5872989728aa709:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cereal
 * [new ref]         a50e4089f219ee0d89169143a5872989728aa709 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a50e408 Migrate to SPDX license