$ git clone -n https://src.fedoraproject.org/rpms/tcptrack.git /var/lib/mock/f41-build-side-1-2670528-29059/root/chroot_tmpdir/scmroot/tcptrack
Cloning into '/var/lib/mock/f41-build-side-1-2670528-29059/root/chroot_tmpdir/scmroot/tcptrack'...
$ git fetch origin 523d768b42c1ddccca21e82efe2a170022b5ccc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcptrack
 * [new ref]         523d768b42c1ddccca21e82efe2a170022b5ccc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 523d768 convert license to SPDX