$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_builder.git /var/lib/mock/f40-build-2061412-49167/root/chroot_tmpdir/scmroot/rust-clap_builder
Cloning into '/var/lib/mock/f40-build-2061412-49167/root/chroot_tmpdir/scmroot/rust-clap_builder'...
$ git fetch origin d4f5f9ffce4faab3959679d3e44521fce698a87c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_builder
 * [new ref]         d4f5f9ffce4faab3959679d3e44521fce698a87c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4f5f9f Update to version 4.4.9; Fixes RHBZ#2249159