$ git clone -n https://src.fedoraproject.org/rpms/python-pystemd.git /var/lib/mock/f40-build-783623-133063/root/chroot_tmpdir/scmroot/python-pystemd
Cloning into '/var/lib/mock/f40-build-783623-133063/root/chroot_tmpdir/scmroot/python-pystemd'...
$ git fetch origin bb26f5fac67483caae6e6fa6478463be8b1cca74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pystemd
 * [new ref]         bb26f5fac67483caae6e6fa6478463be8b1cca74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bb26f5f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild