storing of irrelevant branches

Its partly bug, partly change request.
Right now in coin influxd db we store around 1263 different branches.
That makes carnality of branch tag very high, infects indexing and slows db performance.
Additionally many of those branches are simply not used, or a "single use branches" .
See examples and full list of branches in attachment.
We need to decide which branches are essential store them and ignore other, and in case of status checks run from coin web maybe store it under common name (to avoid high carnality)?

examples:
71190ecd3d1aacf6b0eb823d8a09475f4359abca
7fe4ce536a87d41029612a99804948be8a021a9e
8aaf476a2bfaf15c49ca1c99d1ad547c727e7a4d
a62788f8f62cb67ab11434311646cc57841d70eb
b555b47dafd1a078a2b9a125e1a353495b44ca5b

refs/changes/09/258509/5
refs/changes/09/280209/3
refs/changes/10/284310/1
refs/changes/10/298710/3
refs/changes/10/298710/4

refs/personal/hehalmet/MacOS1013ImageUpdate_ProvisioningOrderChange_GCCFix_515

warrior
sumo