$ git clone -n https://src.fedoraproject.org/rpms/rust-kurbu5-kdb-derive.git /var/lib/mock/f45-build-42800-796/root/chroot_tmpdir/scmroot/rust-kurbu5-kdb-derive
Cloning into '/var/lib/mock/f45-build-42800-796/root/chroot_tmpdir/scmroot/rust-kurbu5-kdb-derive'...
$ git fetch origin ad2a1158f80197243e51c34cdc32d84e63a5356f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-kurbu5-kdb-derive
 * [new ref]         ad2a1158f80197243e51c34cdc32d84e63a5356f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad2a115 Update to version 0.1.4