$ git clone -n https://src.fedoraproject.org/rpms/rust-uefi.git /var/lib/mock/f45-build-45830-828/root/chroot_tmpdir/scmroot/rust-uefi
Cloning into '/var/lib/mock/f45-build-45830-828/root/chroot_tmpdir/scmroot/rust-uefi'...
$ git fetch origin 38509d83e0b2dea70367b3bbce62e3c6fcf7e591:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uefi
 * [new ref]         38509d83e0b2dea70367b3bbce62e3c6fcf7e591 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38509d8 update to version 0.39.0