$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime.git /var/lib/mock/f41-build-1115258-20214/root/chroot_tmpdir/scmroot/perl-DateTime
Cloning into '/var/lib/mock/f41-build-1115258-20214/root/chroot_tmpdir/scmroot/perl-DateTime'...
$ git fetch origin 061848b6de1bc7cf025f818a1e764241a3f2fe4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime
 * [new ref]         061848b6de1bc7cf025f818a1e764241a3f2fe4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 061848b Perl 5.40 re-rebuild of bootstrapped packages