$ git clone -n https://src.fedoraproject.org/rpms/pycmd.git /var/lib/mock/f45-build-29111-635/root/chroot_tmpdir/scmroot/pycmd
Cloning into '/var/lib/mock/f45-build-29111-635/root/chroot_tmpdir/scmroot/pycmd'...
$ git fetch origin 4312767cc89baaf648e038f8c56ddecca243568a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pycmd
 * [new ref]         4312767cc89baaf648e038f8c56ddecca243568a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4312767 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild