$ git clone -n https://src.fedoraproject.org/rpms/libldb.git /var/lib/mock/f41-build-side-1-2751769-31128/root/chroot_tmpdir/scmroot/libldb
Cloning into '/var/lib/mock/f41-build-side-1-2751769-31128/root/chroot_tmpdir/scmroot/libldb'...
$ git fetch origin 8dee8c49c8e1aec7c9344ae246bf664ca46e6d55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libldb
 * [new ref]         8dee8c49c8e1aec7c9344ae246bf664ca46e6d55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8dee8c4 Package will be built from samba sources