$ git clone -n https://src.fedoraproject.org/rpms/rust-pcap.git /var/lib/mock/f45-build-43718-805/root/chroot_tmpdir/scmroot/rust-pcap
Cloning into '/var/lib/mock/f45-build-43718-805/root/chroot_tmpdir/scmroot/rust-pcap'...
$ git fetch origin f46c12d55c0cb95a656cf86eb204d6727539e487:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pcap
 * [new ref]         f46c12d55c0cb95a656cf86eb204d6727539e487 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f46c12d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild