$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-NiceDump.git /var/lib/mock/f45-build-26779-619/root/chroot_tmpdir/scmroot/perl-Test-NiceDump
Cloning into '/var/lib/mock/f45-build-26779-619/root/chroot_tmpdir/scmroot/perl-Test-NiceDump'...
$ git fetch origin 6e67876caa0ff01230d712565224515707ab0f27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-NiceDump
 * [new ref]         6e67876caa0ff01230d712565224515707ab0f27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e67876 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild