$ git clone -n https://src.fedoraproject.org/rpms/rust-icu_normalizer_data.git /var/lib/mock/f45-build-42483-794/root/chroot_tmpdir/scmroot/rust-icu_normalizer_data
Cloning into '/var/lib/mock/f45-build-42483-794/root/chroot_tmpdir/scmroot/rust-icu_normalizer_data'...
$ git fetch origin 7b14a19dff9ab318c047e5aee32c3a7cdcd2ef12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-icu_normalizer_data
 * [new ref]         7b14a19dff9ab318c047e5aee32c3a7cdcd2ef12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b14a19 Update to version 2.3.0; Fixes RHBZ#2515890