$ git clone -n https://src.fedoraproject.org/rpms/rust-apple-nvram.git /var/lib/mock/f45-build-40112-768/root/chroot_tmpdir/scmroot/rust-apple-nvram
Cloning into '/var/lib/mock/f45-build-40112-768/root/chroot_tmpdir/scmroot/rust-apple-nvram'...
$ git fetch origin 671166f024a510350dc6f1e807c387d080195b2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-apple-nvram
 * [new ref]         671166f024a510350dc6f1e807c387d080195b2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 671166f Update to version 0.3.2; Fixes RHBZ#2437629