$ git clone -n https://src.fedoraproject.org/rpms/rust-ipnetwork.git /var/lib/mock/f45-build-42636-795/root/chroot_tmpdir/scmroot/rust-ipnetwork
Cloning into '/var/lib/mock/f45-build-42636-795/root/chroot_tmpdir/scmroot/rust-ipnetwork'...
$ git fetch origin 9ea2cc94f7a9ea438862b103344c703533c862e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ipnetwork
 * [new ref]         9ea2cc94f7a9ea438862b103344c703533c862e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ea2cc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild