$ git clone -n https://src.fedoraproject.org/rpms/extra-cmake-modules.git /var/lib/mock/f45-build-8568-391/root/chroot_tmpdir/scmroot/extra-cmake-modules
Cloning into '/var/lib/mock/f45-build-8568-391/root/chroot_tmpdir/scmroot/extra-cmake-modules'...
$ git fetch origin 65d7b3b9805a906219bfd1ca479dada82e1c5c37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/extra-cmake-modules
 * [new ref]         65d7b3b9805a906219bfd1ca479dada82e1c5c37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65d7b3b 6.31.0