$ git clone -n https://src.fedoraproject.org/rpms/perl-Regexp-Pattern-Perl.git /var/lib/mock/f45-build-26055-614/root/chroot_tmpdir/scmroot/perl-Regexp-Pattern-Perl
Cloning into '/var/lib/mock/f45-build-26055-614/root/chroot_tmpdir/scmroot/perl-Regexp-Pattern-Perl'...
$ git fetch origin 979eb496b3d69b25d5786ed4e4d8c3d5c722fcb3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Regexp-Pattern-Perl
 * [new ref]         979eb496b3d69b25d5786ed4e4d8c3d5c722fcb3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 979eb49 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild