$ git clone -n https://src.fedoraproject.org/rpms/pyserial.git /var/lib/mock/f45-build-29174-636/root/chroot_tmpdir/scmroot/pyserial
Cloning into '/var/lib/mock/f45-build-29174-636/root/chroot_tmpdir/scmroot/pyserial'...
$ git fetch origin 2249483bdaab0e9c99e52b7f8dc3fc8707c31cdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pyserial
 * [new ref]         2249483bdaab0e9c99e52b7f8dc3fc8707c31cdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2249483 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild