$ git clone -n https://src.fedoraproject.org/rpms/perl-POE-Component-Client-SMTP.git /var/lib/mock/f45-build-25531-611/root/chroot_tmpdir/scmroot/perl-POE-Component-Client-SMTP
Cloning into '/var/lib/mock/f45-build-25531-611/root/chroot_tmpdir/scmroot/perl-POE-Component-Client-SMTP'...
$ git fetch origin 4f229ea89362834e308454c5eb3327d56b0748e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-POE-Component-Client-SMTP
 * [new ref]         4f229ea89362834e308454c5eb3327d56b0748e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f229ea Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild