$ git clone -n https://src.fedoraproject.org/rpms/ncmpc.git /var/lib/mock/f39-build-1635802-39877/root/chroot_tmpdir/scmroot/ncmpc
Cloning into '/var/lib/mock/f39-build-1635802-39877/root/chroot_tmpdir/scmroot/ncmpc'...
$ git fetch origin f7a0c3545c7fd2743f7aabd7426b705491b5c997:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ncmpc
 * [new ref]         f7a0c3545c7fd2743f7aabd7426b705491b5c997 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7a0c35 Add signature