I am just starting this esp32 course. Followed instructions in module 1 unit3, installed GIT, but when asked to clone the repository for esp32, it creates the hardware/espressif/esp32 directory, then just sits there with no files downloaded. Please help asap because I cant even get started because of this.

Got a bit further — selected the doit ESP32 devkit board in arduino ide, it came up with COM3 and COM5 as options in tools menu, but when I try and upload any program it cant connect with the board. Do I have to install any boot loader?
Arduino: 1.8.5 (Windows 10), Board: “DOIT ESP32 DEVKIT V1, 80MHz, 921600, None”
Sketch uses 164145 bytes (12%) of program storage space. Maximum is 1310720 bytes.
Global variables use 11180 bytes (3%) of dynamic memory, leaving 283732 bytes for local variables. Maximum is 294912 bytes.
esptool.py v2.3.1
Connecting…….._____….._____….._____….._____….._____….._____….._____….._____….._____….._____
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
Arduino: 1.8.5 (Windows 10), Board: “DOIT ESP32 DEVKIT V1, 80MHz, 921600, None”
Sketch uses 164145 bytes (12%) of program storage space. Maximum is 1310720 bytes.
Global variables use 11180 bytes (3%) of dynamic memory, leaving 283732 bytes for local variables. Maximum is 294912 bytes.
esptool.py v2.3.1
Connecting…….._____….._____….._____….._____….._____….._____….._____….._____….._____….._____
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.

Hi Tejas,
It looks like you’ve installed the ESP32 add-on installed properly, that error means that your ESP is not establishing a good connection with your computer. Are you connecting the ESP directly to the computer USB port? Can you try with a different USB cable?