$ git clone -n https://src.fedoraproject.org/rpms/flamethrower.git /var/lib/mock/f42-build-886168-187170/root/chroot_tmpdir/scmroot/flamethrower
Cloning into '/var/lib/mock/f42-build-886168-187170/root/chroot_tmpdir/scmroot/flamethrower'...
$ git fetch origin 2bf286be270f73d3b71ba501406346d7f139de00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flamethrower
 * [new ref]         2bf286be270f73d3b71ba501406346d7f139de00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2bf286b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild