$ git clone -n https://src.fedoraproject.org/rpms/rust-libudev.git /var/lib/mock/f45-build-43021-799/root/chroot_tmpdir/scmroot/rust-libudev
Cloning into '/var/lib/mock/f45-build-43021-799/root/chroot_tmpdir/scmroot/rust-libudev'...
$ git fetch origin 80062c5c069de1dc1e46cdae9f84acc22871a6ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libudev
 * [new ref]         80062c5c069de1dc1e46cdae9f84acc22871a6ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80062c5 Regenerate with rust2rpm v28