$ git clone -n https://src.fedoraproject.org/rpms/dnf-plugins-extras.git /var/lib/mock/f39-build-1486975-34485/root/chroot_tmpdir/scmroot/dnf-plugins-extras
Cloning into '/var/lib/mock/f39-build-1486975-34485/root/chroot_tmpdir/scmroot/dnf-plugins-extras'...
$ git fetch origin aa5ef71b61604edcecf8ee2367a1cf7ce3956c88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dnf-plugins-extras
 * [new ref]         aa5ef71b61604edcecf8ee2367a1cf7ce3956c88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa5ef71 Update to 4.1.1