$ git clone -n https://src.fedoraproject.org/rpms/perl-License-Syntax.git /var/lib/mock/f45-build-24414-603/root/chroot_tmpdir/scmroot/perl-License-Syntax
Cloning into '/var/lib/mock/f45-build-24414-603/root/chroot_tmpdir/scmroot/perl-License-Syntax'...
$ git fetch origin a017a5e2b43e554554e6a1587859522793e490fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-License-Syntax
 * [new ref]         a017a5e2b43e554554e6a1587859522793e490fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a017a5e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild