$ git clone -n https://src.fedoraproject.org/rpms/libkleo.git /var/lib/mock/f40-build-774614-127710/root/chroot_tmpdir/scmroot/libkleo
Cloning into '/var/lib/mock/f40-build-774614-127710/root/chroot_tmpdir/scmroot/libkleo'...
$ git fetch origin 4045038922838418253ba34f20d3e2b1fc857a93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkleo
 * [new ref]         4045038922838418253ba34f20d3e2b1fc857a93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4045038 24.01.90