$ git clone -n https://src.fedoraproject.org/rpms/Macaulay2.git /var/lib/mock/f40-build-780310-130927/root/chroot_tmpdir/scmroot/Macaulay2
Cloning into '/var/lib/mock/f40-build-780310-130927/root/chroot_tmpdir/scmroot/Macaulay2'...
$ git fetch origin d2d3d3bb3cf63e8a3855a6c675fdcf99943e193d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/Macaulay2
 * [new ref]         d2d3d3bb3cf63e8a3855a6c675fdcf99943e193d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2d3d3b Version 1.22