$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_lex0.2.git /var/lib/mock/f45-build-40821-776/root/chroot_tmpdir/scmroot/rust-clap_lex0.2
Cloning into '/var/lib/mock/f45-build-40821-776/root/chroot_tmpdir/scmroot/rust-clap_lex0.2'...
$ git fetch origin 45317618489b2634fbb28e17d85ad4b77c9943ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_lex0.2
 * [new ref]         45317618489b2634fbb28e17d85ad4b77c9943ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4531761 Regenerate with rust2rpm v28