$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-NoWarnings.git /var/lib/mock/f45-build-26766-619/root/chroot_tmpdir/scmroot/perl-Test-NoWarnings
Cloning into '/var/lib/mock/f45-build-26766-619/root/chroot_tmpdir/scmroot/perl-Test-NoWarnings'...
$ git fetch origin 59fed9f5988e38b35aa73333e25c903aaff19e06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-NoWarnings
 * [new ref]         59fed9f5988e38b35aa73333e25c903aaff19e06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59fed9f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild