$ git clone -n http://fedora.riscv.rocks:3000/rpms/boost.git /var/lib/mock/f40-build-730401-103221/root/chroot_tmpdir/scmroot/boost
Cloning into '/var/lib/mock/f40-build-730401-103221/root/chroot_tmpdir/scmroot/boost'...
$ git fetch origin e5214f98e752ab25ba5e2438e97d49f8d92c0c01:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/boost
 * [new ref]         e5214f98e752ab25ba5e2438e97d49f8d92c0c01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5214f9 Rebuild for a new Python