$ git clone -n https://src.fedoraproject.org/rpms/nilfs-utils.git /var/lib/mock/f42-build-867466-175508/root/chroot_tmpdir/scmroot/nilfs-utils
Cloning into '/var/lib/mock/f42-build-867466-175508/root/chroot_tmpdir/scmroot/nilfs-utils'...
$ git fetch origin 95c3a4e6731dd327f79dfb837e59dc7476cc1053:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nilfs-utils
 * [new ref]         95c3a4e6731dd327f79dfb837e59dc7476cc1053 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95c3a4e Rebuilt for the bin-sbin merge (2nd attempt)