$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-PDF.git /var/lib/mock/f45-build-27037-620/root/chroot_tmpdir/scmroot/perl-Text-PDF
Cloning into '/var/lib/mock/f45-build-27037-620/root/chroot_tmpdir/scmroot/perl-Text-PDF'...
$ git fetch origin 766bef06d0236ce68cc8d2a1dfed9706d494a967:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-PDF
 * [new ref]         766bef06d0236ce68cc8d2a1dfed9706d494a967 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 766bef0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild