$ git clone -n https://src.fedoraproject.org/rpms/fop.git /var/lib/mock/f41-build-side-1-3133832-39704/root/chroot_tmpdir/scmroot/fop
Cloning into '/var/lib/mock/f41-build-side-1-3133832-39704/root/chroot_tmpdir/scmroot/fop'...
$ git fetch origin 8eb53570f64702916dde972700a4b8499099a270:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fop
 * [new ref]         8eb53570f64702916dde972700a4b8499099a270 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8eb5357 Revert "Fop ver. 2.10"