A computing system may store a first file in a system repository that is to be synchronized with at least a first repository associated with a first client device and a second repository associated with a second client device. The computing system may determine that the first repository is to receive a downloaded copy of at least a portion of the first file, and may cause a copy of the at least a portion of the first file to be downloaded from the system repository to the first repository. Based at least in part on the computing system determining that the first repository is to receive the downloaded copy, an identifier of the at least a portion of first file may be stored in the second repository without storing a copy of the at least a portion of the first file in the second repository.