Vanity
Description
Solution
We are given a gif in the description which gives us a hint "mirror". So we try
git clone --mirror https://github.com/tamuctf/vanity.git
Check out 'packed-refs', the last commit looks suspicious. Just clone the repository and 'checkout' the last commit.
We have sneaky.txt. Opening sneaky.txt gives us the flag.
gigem{watch_the_night_and_bleed_for_me}