$ git clone -n https://src.fedoraproject.org/rpms/libserialport.git /var/lib/mock/f45-build-16956-494/root/chroot_tmpdir/scmroot/libserialport
Cloning into '/var/lib/mock/f45-build-16956-494/root/chroot_tmpdir/scmroot/libserialport'...
$ git fetch origin 0889f14ae97ff227c5cc7cebcfd20719d45840cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libserialport
 * [new ref]         0889f14ae97ff227c5cc7cebcfd20719d45840cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0889f14 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild