$ git clone -n https://src.fedoraproject.org/rpms/perl-Unicode-Stringprep.git /var/lib/mock/f45-build-27338-622/root/chroot_tmpdir/scmroot/perl-Unicode-Stringprep
Cloning into '/var/lib/mock/f45-build-27338-622/root/chroot_tmpdir/scmroot/perl-Unicode-Stringprep'...
$ git fetch origin 246e2918e18064ec993aa8c909e7ed712703a376:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Unicode-Stringprep
 * [new ref]         246e2918e18064ec993aa8c909e7ed712703a376 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 246e291 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild