$ git clone -n https://src.fedoraproject.org/rpms/log4cpp.git /var/lib/mock/f41-build-side-1-2647988-27329/root/chroot_tmpdir/scmroot/log4cpp
Cloning into '/var/lib/mock/f41-build-side-1-2647988-27329/root/chroot_tmpdir/scmroot/log4cpp'...
$ git fetch origin 7098f77e0e95be4ed03b8bcad22d012659ce4e87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/log4cpp
 * [new ref]         7098f77e0e95be4ed03b8bcad22d012659ce4e87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7098f77 convert license to SPDX