$ git clone -n https://src.fedoraproject.org/rpms/lcms.git /var/lib/mock/f40-build-803168-144196/root/chroot_tmpdir/scmroot/lcms
Cloning into '/var/lib/mock/f40-build-803168-144196/root/chroot_tmpdir/scmroot/lcms'...
$ git fetch origin ec24b14fed2293e8a04de31dfcd3e514d4ed4327:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lcms
 * [new ref]         ec24b14fed2293e8a04de31dfcd3e514d4ed4327 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec24b14 Fixed FTBFS on F40+.