$ git clone -n https://src.fedoraproject.org/rpms/coreutils.git /var/lib/mock/f41-build-854721-166949/root/chroot_tmpdir/scmroot/coreutils
Cloning into '/var/lib/mock/f41-build-854721-166949/root/chroot_tmpdir/scmroot/coreutils'...
$ git fetch origin 17ab55a583701d424fdf2481e827070029b583ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coreutils
 * [new ref]         17ab55a583701d424fdf2481e827070029b583ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17ab55a fix fold -b with UTF8 locale