$ git clone -n https://src.fedoraproject.org/rpms/bijiben.git /var/lib/mock/f42-build-3426815-45197/root/chroot_tmpdir/scmroot/bijiben
Cloning into '/var/lib/mock/f42-build-3426815-45197/root/chroot_tmpdir/scmroot/bijiben'...
$ git fetch origin b9db7eb34269dce9a5d644e63cee4237fe85ae02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bijiben
 * [new ref]         b9db7eb34269dce9a5d644e63cee4237fe85ae02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9db7eb Rebuild for the renaming of tracker to tinysparq