$ git clone -n https://src.fedoraproject.org/rpms/snapd.git /var/lib/mock/f39-build-2346890-60054/root/chroot_tmpdir/scmroot/snapd
Cloning into '/var/lib/mock/f39-build-2346890-60054/root/chroot_tmpdir/scmroot/snapd'...
$ git fetch origin 86d010844c728954a21e31c8ea570d0ff439f83e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snapd
 * [new ref]         86d010844c728954a21e31c8ea570d0ff439f83e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86d0108 Fix changelog chronology again