$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Negotiate.git /var/lib/mock/f41-build-766274-13472/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate
Cloning into '/var/lib/mock/f41-build-766274-13472/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate'...
$ git fetch origin fb359e872c4cadd2c67280f73ee51e58d3967251:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Negotiate
 * [new ref]         fb359e872c4cadd2c67280f73ee51e58d3967251 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb359e8 Eliminate use of obsolete %patchN syntax (#2283636)