$ git clone -n https://src.fedoraproject.org/rpms/rust-pnet_sys.git /var/lib/mock/f45-build-43922-809/root/chroot_tmpdir/scmroot/rust-pnet_sys
Cloning into '/var/lib/mock/f45-build-43922-809/root/chroot_tmpdir/scmroot/rust-pnet_sys'...
$ git fetch origin f0c87c8a8d762f8392f6e3d866415451d9bdc521:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pnet_sys
 * [new ref]         f0c87c8a8d762f8392f6e3d866415451d9bdc521 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0c87c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild