$ git clone -n https://src.fedoraproject.org/rpms/koji-tool.git /var/lib/mock/f38-build-side-42-init-devel-1146225-30457/root/chroot_tmpdir/scmroot/koji-tool
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1146225-30457/root/chroot_tmpdir/scmroot/koji-tool'...
$ git fetch origin 99f90a5d8dee4a9fbd5b7e7bcd9c125749c02016:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/koji-tool
 * [new ref]         99f90a5d8dee4a9fbd5b7e7bcd9c125749c02016 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99f90a5 https://hackage.haskell.org/package/koji-tool-1.1/changelog