$ git clone -n https://src.fedoraproject.org/rpms/rust-zip.git /var/lib/mock/f40-build-2270195-54793/root/chroot_tmpdir/scmroot/rust-zip
Cloning into '/var/lib/mock/f40-build-2270195-54793/root/chroot_tmpdir/scmroot/rust-zip'...
$ git fetch origin 6ff8e2602e5c712d1c218ddd9774c760765d631c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zip
 * [new ref]         6ff8e2602e5c712d1c218ddd9774c760765d631c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ff8e26 Rebuilt for constant_time_eq 0.3