$ git clone -n https://src.fedoraproject.org/rpms/velocity.git /var/lib/mock/f40-build-2608948-63753/root/chroot_tmpdir/scmroot/velocity
Cloning into '/var/lib/mock/f40-build-2608948-63753/root/chroot_tmpdir/scmroot/velocity'...
$ git fetch origin bcb459127e7d2d8d2e31ae57d323445886952182:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/velocity
 * [new ref]         bcb459127e7d2d8d2e31ae57d323445886952182 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcb4591 Rebuilt for java-21-openjdk as system jdk