$ git clone -n https://src.fedoraproject.org/rpms/rust-icu_properties.git /var/lib/mock/f45-build-42477-794/root/chroot_tmpdir/scmroot/rust-icu_properties
Cloning into '/var/lib/mock/f45-build-42477-794/root/chroot_tmpdir/scmroot/rust-icu_properties'...
$ git fetch origin 71a4e902b84a0a6a98b0509608f2146158ffefe2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-icu_properties
 * [new ref]         71a4e902b84a0a6a98b0509608f2146158ffefe2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71a4e90 Update to version 2.3.0; Fixes RHBZ#2515895