We got some messages like: GitHub API Usage: Current quota has 3900 remaining (78 over budget). Next quota of 5000 in 59 min. Sleeping for 1 min 39 sec After investigation we found, that GitHub rate limit remaining and resetDate sometimes increase (out log part: https://gist.github.com/bozaro/1b64f3eb617af97b5f4c822cac870212).
I could not figure out how to implement the correct throttling.