Everybody developer wants to get better atGit. Not every developer actually makes the effort.
A majority of Fortune 500 companies use git in one form or another and require it as a skill for new developers. Most developers use Git everyday either through Github, Gitlab or BitBucket and being comfortable with the commands can be the difference between spending hours on a task possibly breaking code or spending minutes to seconds when you're well prepared.
95% of the commands you'll use everyday will be at your fingertips on this mug so you don't have to stop your coding flow having to Google a git command. Do yourself a favor and invest in yourself and your career.
You'll thank yourself when you see the return on investment being proficient in git has on your career.