$ git clone -n https://src.fedoraproject.org/rpms/rubygem-settingslogic.git /var/lib/mock/f41-build-1093594-19988/root/chroot_tmpdir/scmroot/rubygem-settingslogic
Cloning into '/var/lib/mock/f41-build-1093594-19988/root/chroot_tmpdir/scmroot/rubygem-settingslogic'...
$ git fetch origin ba0d4f471d919f6a9d9d0285ac1c7b2f005ddc4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-settingslogic
 * [new ref]         ba0d4f471d919f6a9d9d0285ac1c7b2f005ddc4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba0d4f4 Eliminate use of obsolete %patchN syntax (#2283636)