$ git clone -n https://src.fedoraproject.org/rpms/rust-icu_locale_core.git /var/lib/mock/f45-build-42473-794/root/chroot_tmpdir/scmroot/rust-icu_locale_core
Cloning into '/var/lib/mock/f45-build-42473-794/root/chroot_tmpdir/scmroot/rust-icu_locale_core'...
$ git fetch origin c1a1898306e83d3544c0eb01c2622a76be128c63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-icu_locale_core
 * [new ref]         c1a1898306e83d3544c0eb01c2622a76be128c63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1a1898 Update to version 2.3.0; Fixes RHBZ#2515887