$ git clone -n https://src.fedoraproject.org/rpms/compiz.git /var/lib/mock/f40-build-801303-143755/root/chroot_tmpdir/scmroot/compiz
Cloning into '/var/lib/mock/f40-build-801303-143755/root/chroot_tmpdir/scmroot/compiz'...
$ git fetch origin 72991e35cd69c5482c3a093598b935dad9e14b96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/compiz
 * [new ref]         72991e35cd69c5482c3a093598b935dad9e14b96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72991e3 Fixed compatibility with libxml-2.12