$ git clone -n https://src.fedoraproject.org/rpms/mingw-python-flit-core.git /var/lib/mock/f42-build-side-1-3569489-46747/root/chroot_tmpdir/scmroot/mingw-python-flit-core
Cloning into '/var/lib/mock/f42-build-side-1-3569489-46747/root/chroot_tmpdir/scmroot/mingw-python-flit-core'...
$ git fetch origin feae93601268686ef2f7f558455bf2b6cd548be7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-python-flit-core
 * [new ref]         feae93601268686ef2f7f558455bf2b6cd548be7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at feae936 Update to 3.12.0