$ git clone -n https://src.fedoraproject.org/rpms/rust-winnow.git /var/lib/mock/f45-build-46219-832/root/chroot_tmpdir/scmroot/rust-winnow
Cloning into '/var/lib/mock/f45-build-46219-832/root/chroot_tmpdir/scmroot/rust-winnow'...
$ git fetch origin b825ded4da30bbce6d0b5ce6c59f189936ed978e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-winnow
 * [new ref]         b825ded4da30bbce6d0b5ce6c59f189936ed978e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b825ded Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild