$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-diff4.git /var/lib/mock/f45-build-28369-629/root/chroot_tmpdir/scmroot/php-sebastian-diff4
Cloning into '/var/lib/mock/f45-build-28369-629/root/chroot_tmpdir/scmroot/php-sebastian-diff4'...
$ git fetch origin 659876af6cac0264c5fc9c25d316b247722dfc94:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-diff4
 * [new ref]         659876af6cac0264c5fc9c25d316b247722dfc94 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 659876a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild