$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-var-representation.git /var/lib/mock/f45-build-28104-628/root/chroot_tmpdir/scmroot/php-pecl-var-representation
Cloning into '/var/lib/mock/f45-build-28104-628/root/chroot_tmpdir/scmroot/php-pecl-var-representation'...
$ git fetch origin 2b6eda7a1883858ef49febe8bf8853b7d2279a7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-var-representation
 * [new ref]         2b6eda7a1883858ef49febe8bf8853b7d2279a7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b6eda7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild