$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-explore.git /var/lib/mock/f41-build-side-1-3137264-39791/root/chroot_tmpdir/scmroot/rust-nu-explore
Cloning into '/var/lib/mock/f41-build-side-1-3137264-39791/root/chroot_tmpdir/scmroot/rust-nu-explore'...
$ git fetch origin dc4c4ba8794794bcbb93ed4584b23140e687c26a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-explore
 * [new ref]         dc4c4ba8794794bcbb93ed4584b23140e687c26a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc4c4ba Update to version 0.99.1