$ git clone -n https://src.fedoraproject.org/rpms/librs232.git /var/lib/mock/f45-build-16886-493/root/chroot_tmpdir/scmroot/librs232
Cloning into '/var/lib/mock/f45-build-16886-493/root/chroot_tmpdir/scmroot/librs232'...
$ git fetch origin a04d94bd93a1bf29210c4dc178ac02f048b928d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librs232
 * [new ref]         a04d94bd93a1bf29210c4dc178ac02f048b928d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a04d94b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild