$ git clone -n https://src.fedoraproject.org/rpms/abook.git /var/lib/mock/f41-build-1020042-17995/root/chroot_tmpdir/scmroot/abook
Cloning into '/var/lib/mock/f41-build-1020042-17995/root/chroot_tmpdir/scmroot/abook'...
$ git fetch origin 72fff85e12b27de6abc050ca0d23299987e04df4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/abook
 * [new ref]         72fff85e12b27de6abc050ca0d23299987e04df4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72fff85 Eliminate use of obsolete %patchN syntax (#2283636)