$ git clone -n https://src.fedoraproject.org/rpms/rust-icu_segmenter_data.git /var/lib/mock/f45-build-42481-794/root/chroot_tmpdir/scmroot/rust-icu_segmenter_data
Cloning into '/var/lib/mock/f45-build-42481-794/root/chroot_tmpdir/scmroot/rust-icu_segmenter_data'...
$ git fetch origin 7cf6c7e412bab0b63f4f1328cbc89d75e5df34c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-icu_segmenter_data
 * [new ref]         7cf6c7e412bab0b63f4f1328cbc89d75e5df34c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cf6c7e Update to version 2.3.0; Fixes RHBZ#2515899