$ git clone -n https://src.fedoraproject.org/rpms/cmake.git /var/lib/mock/f38-build-side-42-init-devel-1028524-29697/root/chroot_tmpdir/scmroot/cmake
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1028524-29697/root/chroot_tmpdir/scmroot/cmake'...
$ git fetch origin 576059f704d97efc39a7a18e1b24c50c718eaa8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cmake
 * [new ref]         576059f704d97efc39a7a18e1b24c50c718eaa8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 576059f Fix baserelease