$ git clone -n https://src.fedoraproject.org/rpms/rust-visibility.git /var/lib/mock/f45-build-46078-830/root/chroot_tmpdir/scmroot/rust-visibility
Cloning into '/var/lib/mock/f45-build-46078-830/root/chroot_tmpdir/scmroot/rust-visibility'...
$ git fetch origin 1a3d8d8ae2f55265b276e5f6df4afeea491503e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-visibility
 * [new ref]         1a3d8d8ae2f55265b276e5f6df4afeea491503e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a3d8d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild