$ git clone -n https://src.fedoraproject.org/rpms/nagi.git /var/lib/mock/f41-build-1280083-23174/root/chroot_tmpdir/scmroot/nagi
Cloning into '/var/lib/mock/f41-build-1280083-23174/root/chroot_tmpdir/scmroot/nagi'...
$ git fetch origin 49377f59b4877f5785a57e3e99a950997a59b743:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nagi
 * [new ref]         49377f59b4877f5785a57e3e99a950997a59b743 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49377f5 Eliminate use of obsolete %patchN syntax (#2283636)