Use SOURCE_DATE_EPOCH over unreproducible uname + date calls.
Use SOURCE_DATE_EPOCH over unreproducible uname + date calls.

See <https://reproducible-builds.org/specs/source-date-epoch/> for more
details.

Signed-off-by: Chris Lamb <711c73f64afdce07b7e38039a96d2224209e9a6c@chris-lamb.co.uk>

JackieXie168/redis,JackieXie168/redis,JackieXie168/redis,JackieXie168/redis