How to write the execution of the git command in a string variable in a bat script?

Question

git

It is necessary that when you run a bat file containing approximately:
git log --pretty=format:"%%h" -1
The result of the execution is written to a string variable.
The following code doesn't work:

FOR /F "usebackq" %%a IN (' git log --pretty=format:"%%h" -1 ') DO (
 set str1=%%a
)
echo %str1%

Answer 1

Read about SetLocal EnableDelayedExpansion, it seems to me that all your problems are related to it.
For example, in this example, everything was very similar
PS And as far as I understand, you wanted to glue, and inside the loop your variable is simply overwritten.

Answer 2

instead of "usebackq" write "tokens=* delims="