$ git clone -n https://src.fedoraproject.org/rpms/rust-env_filter.git /var/lib/mock/f45-build-41487-782/root/chroot_tmpdir/scmroot/rust-env_filter
Cloning into '/var/lib/mock/f45-build-41487-782/root/chroot_tmpdir/scmroot/rust-env_filter'...
$ git fetch origin 88dd2c0ff593965cee01a2a6903c33ad54edb28f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-env_filter
 * [new ref]         88dd2c0ff593965cee01a2a6903c33ad54edb28f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88dd2c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild