$ git clone -n https://src.fedoraproject.org/rpms/p0rn-comfort.git /var/lib/mock/f41-build-1022726-18093/root/chroot_tmpdir/scmroot/p0rn-comfort
Cloning into '/var/lib/mock/f41-build-1022726-18093/root/chroot_tmpdir/scmroot/p0rn-comfort'...
$ git fetch origin f76152bb51269941f80402f442232ecb7923ed7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/p0rn-comfort
 * [new ref]         f76152bb51269941f80402f442232ecb7923ed7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f76152b Eliminate use of obsolete %patchN syntax (#2283636)