Add details to step 1.

Co-authored-by: Arran Schlosberg <[email protected]>
Signed-off-by: Quentin McGaw <[email protected]>

Author: qdm12

libevm/tooling/release/README.md

@@ -2,7 +2,7 @@
 
 In the following, we create a release candidate tag `v1.13.14-0.2.0.rc.4`.
 
-1. Create two branches, usually from the `main` branch:
+1. Create two branches, usually from the tip of the `main` branch, but the base commit MAY be from anywhere on `main`:
 
     ```bash
     git fetch origin main:main