$ git clone -n https://src.fedoraproject.org/rpms/php-IDNA_Convert.git /var/lib/mock/f45-build-27791-626/root/chroot_tmpdir/scmroot/php-IDNA_Convert
Cloning into '/var/lib/mock/f45-build-27791-626/root/chroot_tmpdir/scmroot/php-IDNA_Convert'...
$ git fetch origin 22bee0f2f2c2e92b267445e4f1dbed7f53aafffd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-IDNA_Convert
 * [new ref]         22bee0f2f2c2e92b267445e4f1dbed7f53aafffd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22bee0f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild