$ git clone -n https://src.fedoraproject.org/rpms/micropython.git /var/lib/mock/f45-build-18318-513/root/chroot_tmpdir/scmroot/micropython
Cloning into '/var/lib/mock/f45-build-18318-513/root/chroot_tmpdir/scmroot/micropython'...
$ git fetch origin d61294a7ab7cfd606bf562b047da1646e02c9812:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/micropython
 * [new ref]         d61294a7ab7cfd606bf562b047da1646e02c9812 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d61294a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild