$ git clone -n https://src.fedoraproject.org/rpms/python-formulaic.git /var/lib/mock/f39-build-1851362-42263/root/chroot_tmpdir/scmroot/python-formulaic
Cloning into '/var/lib/mock/f39-build-1851362-42263/root/chroot_tmpdir/scmroot/python-formulaic'...
$ git fetch origin 0015f7107aa733ff7cd72fc8610187a687ac62e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-formulaic
 * [new ref]         0015f7107aa733ff7cd72fc8610187a687ac62e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0015f71 [packit] 0.6.6 upstream release