$ git clone -n https://src.fedoraproject.org/rpms/rust-ppv-lite86.git /var/lib/mock/f45-build-43935-809/root/chroot_tmpdir/scmroot/rust-ppv-lite86
Cloning into '/var/lib/mock/f45-build-43935-809/root/chroot_tmpdir/scmroot/rust-ppv-lite86'...
$ git fetch origin 07a8e9798feb9affb181af8e60617ad4ee885fb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ppv-lite86
 * [new ref]         07a8e9798feb9affb181af8e60617ad4ee885fb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07a8e97 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild