$ git clone -n https://src.fedoraproject.org/rpms/git.git /var/lib/mock/f41-build-side-1-2672591-29195/root/chroot_tmpdir/scmroot/git
Cloning into '/var/lib/mock/f41-build-side-1-2672591-29195/root/chroot_tmpdir/scmroot/git'...
$ git fetch origin 8cb6752747878844176c7fc8663ca534a2bb716e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git
 * [new ref]         8cb6752747878844176c7fc8663ca534a2bb716e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8cb6752 update to 2.46.1