/etc/cron.d/homer is in homer-api 5.0.6+dfsg2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Running rotation script to cron once a day (scripts/homer_rotate)
# at low traffic time
30 4 * * * homer /usr/lib/homer/libexec/homer_rotate > /dev/null 2>&1
#Please uncomment if you need drop partition functionality for daily tables.
#Don't activate it if you are not sure!
#2 * * * * homer /usr/lib/homer/libexec/homer_partremove > /dev/null 2>&1
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