$ git clone -n https://src.fedoraproject.org/rpms/rust-ct-codecs.git /var/lib/mock/f45-build-41055-779/root/chroot_tmpdir/scmroot/rust-ct-codecs
Cloning into '/var/lib/mock/f45-build-41055-779/root/chroot_tmpdir/scmroot/rust-ct-codecs'...
$ git fetch origin dff940135519cc0d3ee80d29d7576ecc346fef07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ct-codecs
 * [new ref]         dff940135519cc0d3ee80d29d7576ecc346fef07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dff9401 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild