$ git clone -n https://src.fedoraproject.org/rpms/perl-SVN-Simple.git /var/lib/mock/f45-build-26103-614/root/chroot_tmpdir/scmroot/perl-SVN-Simple
Cloning into '/var/lib/mock/f45-build-26103-614/root/chroot_tmpdir/scmroot/perl-SVN-Simple'...
$ git fetch origin 53de4bc8779e16214eaac642c5f19f9908785fd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-SVN-Simple
 * [new ref]         53de4bc8779e16214eaac642c5f19f9908785fd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53de4bc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild