$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-actor.git /var/lib/mock/f40-build-2082012-49808/root/chroot_tmpdir/scmroot/rust-gix-actor
Cloning into '/var/lib/mock/f40-build-2082012-49808/root/chroot_tmpdir/scmroot/rust-gix-actor'...
$ git fetch origin 77e0d7445d0d8dc1e813a47ea7e08bdb4997b22b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-actor
 * [new ref]         77e0d7445d0d8dc1e813a47ea7e08bdb4997b22b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77e0d74 Update to version 0.28.0