$ git clone -n https://src.fedoraproject.org/rpms/perl-SVGPDF.git /var/lib/mock/f45-build-26107-614/root/chroot_tmpdir/scmroot/perl-SVGPDF
Cloning into '/var/lib/mock/f45-build-26107-614/root/chroot_tmpdir/scmroot/perl-SVGPDF'...
$ git fetch origin c2d77ac625f4e4a81fe866ade3e6fc61f3876f83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-SVGPDF
 * [new ref]         c2d77ac625f4e4a81fe866ade3e6fc61f3876f83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2d77ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild