This commit is comprised of three changes; two stylistic and one grammatical error fix:
1. change "commit in the past" to "past commit", which flows better in the sentence
2. change "on which past commit you were before" to "which past commit you were on before". While both sentences are grammatical, the former is likely to confuse the reader momentarily because the "on" has to take a long and unexpected journey to land in between "were" and "before".
3. "your HEAD did point to" to "your HEAD has pointed to". This changes the tense to present perfect, which is correct in this circumstance.
The commas in the description are technically ungrammatical, or would be judged so by some, but I like the tone they convey, so I left them.
