$ git clone -n https://src.fedoraproject.org/rpms/php-IDNA_Convert.git /var/lib/mock/f40-build-2213008-52309/root/chroot_tmpdir/scmroot/php-IDNA_Convert
Cloning into '/var/lib/mock/f40-build-2213008-52309/root/chroot_tmpdir/scmroot/php-IDNA_Convert'...
$ git fetch origin f7c4a25fc339d09c219d2964d381c5d5dd44ba08:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-IDNA_Convert
 * [new ref]         f7c4a25fc339d09c219d2964d381c5d5dd44ba08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7c4a25 4.0.1