$ git clone -n https://src.fedoraproject.org/rpms/perl-Dist-Metadata.git /var/lib/mock/f45-build-23208-596/root/chroot_tmpdir/scmroot/perl-Dist-Metadata
Cloning into '/var/lib/mock/f45-build-23208-596/root/chroot_tmpdir/scmroot/perl-Dist-Metadata'...
$ git fetch origin 35a926be51e5185e92ff61b4fced9b460fcaf968:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Dist-Metadata
 * [new ref]         35a926be51e5185e92ff61b4fced9b460fcaf968 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 35a926b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild