$ git clone -n https://src.fedoraproject.org/rpms/utop.git /var/lib/mock/f41-build-1164840-21591/root/chroot_tmpdir/scmroot/utop
Cloning into '/var/lib/mock/f41-build-1164840-21591/root/chroot_tmpdir/scmroot/utop'...
$ git fetch origin 849a8b8087d408f559ace9853eb9b6d10142bc8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/utop
 * [new ref]         849a8b8087d408f559ace9853eb9b6d10142bc8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 849a8b8 OCaml 5.2.0 ppc64le fix