$ git clone -n https://src.fedoraproject.org/rpms/cppmyth.git /var/lib/mock/f40-build-2275995-55121/root/chroot_tmpdir/scmroot/cppmyth
Cloning into '/var/lib/mock/f40-build-2275995-55121/root/chroot_tmpdir/scmroot/cppmyth'...
$ git fetch origin 43a4159497cd5ef2da70f8db1c4e78197d50f8d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cppmyth
 * [new ref]         43a4159497cd5ef2da70f8db1c4e78197d50f8d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43a4159 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild