$ git clone -n https://src.fedoraproject.org/rpms/tcpreplay.git /var/lib/mock/f41-build-side-1-2670530-29059/root/chroot_tmpdir/scmroot/tcpreplay
Cloning into '/var/lib/mock/f41-build-side-1-2670530-29059/root/chroot_tmpdir/scmroot/tcpreplay'...
$ git fetch origin f9b38d73acac2a0b2c8879e9992945092b0b6ca3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcpreplay
 * [new ref]         f9b38d73acac2a0b2c8879e9992945092b0b6ca3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9b38d7 convert GPLv3 license to SPDX