$ git clone -n https://src.fedoraproject.org/rpms/python-hexbytes.git /var/lib/mock/f45-build-30959-648/root/chroot_tmpdir/scmroot/python-hexbytes
Cloning into '/var/lib/mock/f45-build-30959-648/root/chroot_tmpdir/scmroot/python-hexbytes'...
$ git fetch origin 83fb6db95117b3e395d1b7e50b64caf0a56c02c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-hexbytes
 * [new ref]         83fb6db95117b3e395d1b7e50b64caf0a56c02c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83fb6db Update to 2.0.0