$ git clone -n https://src.fedoraproject.org/rpms/unicornscan.git /var/lib/mock/f40-build-746084-112357/root/chroot_tmpdir/scmroot/unicornscan
Cloning into '/var/lib/mock/f40-build-746084-112357/root/chroot_tmpdir/scmroot/unicornscan'...
$ git fetch origin 0184fb9420bde42d467a3f34ee0a7b1660838275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/unicornscan
 * [new ref]         0184fb9420bde42d467a3f34ee0a7b1660838275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0184fb9 Port configure script to C99