$ git clone -n https://src.fedoraproject.org/rpms/kclock.git /var/lib/mock/f40-build-2086756-50147/root/chroot_tmpdir/scmroot/kclock
Cloning into '/var/lib/mock/f40-build-2086756-50147/root/chroot_tmpdir/scmroot/kclock'...
$ git fetch origin f696f74807f18caf89d148799cbc49c71f99b3be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kclock
 * [new ref]         f696f74807f18caf89d148799cbc49c71f99b3be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f696f74 24.01.80