$ git clone -n https://src.fedoraproject.org/rpms/rust-lru.git /var/lib/mock/f42-build-side-1-3588968-46952/root/chroot_tmpdir/scmroot/rust-lru
Cloning into '/var/lib/mock/f42-build-side-1-3588968-46952/root/chroot_tmpdir/scmroot/rust-lru'...
$ git fetch origin 62ea44a02ee2e0f5ad1ddf7d8d2dd1b77478313f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lru
 * [new ref]         62ea44a02ee2e0f5ad1ddf7d8d2dd1b77478313f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62ea44a Update to version 0.14.0