$ git clone -n https://src.fedoraproject.org/rpms/netsurf.git /var/lib/mock/f41-build-3155545-40677/root/chroot_tmpdir/scmroot/netsurf
Cloning into '/var/lib/mock/f41-build-3155545-40677/root/chroot_tmpdir/scmroot/netsurf'...
$ git fetch origin f671707b90a01386b7559b6fed903b1b7089d87c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/netsurf
 * [new ref]         f671707b90a01386b7559b6fed903b1b7089d87c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f671707 convert GPLv2 license to SPDX