$ git clone -n https://src.fedoraproject.org/rpms/rust-icu_normalizer.git /var/lib/mock/f45-build-42469-794/root/chroot_tmpdir/scmroot/rust-icu_normalizer
Cloning into '/var/lib/mock/f45-build-42469-794/root/chroot_tmpdir/scmroot/rust-icu_normalizer'...
$ git fetch origin 2904fc8b044e65ee0aef114b3e4cb253e6c6a312:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-icu_normalizer
 * [new ref]         2904fc8b044e65ee0aef114b3e4cb253e6c6a312 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2904fc8 Update to version 2.3.0; Fixes RHBZ#2515889