$ git clone -n https://src.fedoraproject.org/rpms/m4.git /var/lib/mock/f40-build-2296736-56411/root/chroot_tmpdir/scmroot/m4
Cloning into '/var/lib/mock/f40-build-2296736-56411/root/chroot_tmpdir/scmroot/m4'...
$ git fetch origin 2ed6a158364a6d87c0f6c93571467c0ef14afa00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/m4
 * [new ref]         2ed6a158364a6d87c0f6c93571467c0ef14afa00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ed6a15 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild