$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Exports.git /var/lib/mock/f45-build-26651-618/root/chroot_tmpdir/scmroot/perl-Test-Exports
Cloning into '/var/lib/mock/f45-build-26651-618/root/chroot_tmpdir/scmroot/perl-Test-Exports'...
$ git fetch origin 79d2daffdb745e55742cac29aa158b618d4b0d53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Exports
 * [new ref]         79d2daffdb745e55742cac29aa158b618d4b0d53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79d2daf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild