$ git clone -n https://src.fedoraproject.org/rpms/rust-cursive.git /var/lib/mock/f42-build-side-1-3586535-46923/root/chroot_tmpdir/scmroot/rust-cursive
Cloning into '/var/lib/mock/f42-build-side-1-3586535-46923/root/chroot_tmpdir/scmroot/rust-cursive'...
$ git fetch origin ffc2a891ea338c6bb4f39c90952eab42676e49b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cursive
 * [new ref]         ffc2a891ea338c6bb4f39c90952eab42676e49b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffc2a89 Drop ncurses and pancurses backends, ncurses-rs is archived