$ git clone -n https://src.fedoraproject.org/rpms/python-justbytes.git /var/lib/mock/f43-build-61078360-6588737/root/chroot_tmpdir/scmroot/python-justbytes
Cloning into '/var/lib/mock/f43-build-61078360-6588737/root/chroot_tmpdir/scmroot/python-justbytes'...
$ git fetch origin a0c407ec386f98cfd5207656c5df337f06a30c52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-justbytes
 * [new ref]         a0c407ec386f98cfd5207656c5df337f06a30c52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0c407e Pyprojectize