repo cannot be cloned

We are seeing the following error:
remote: error: Could not read 1248655d4ed1dc40805ab71a45340f2355f3dd92
remote: fatal: bad tree object 1248655d4ed1dc40805ab71a45340f2355f3dd92
error: git upload-pack: git-pack-objects died with error.
fatal: git upload-pack: aborting due to possible repository corruption on the remote side.
remote: aborting due to possible repository corruption on the remote side.
fatal: early EOF
fatal: index-pack failed