$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcalendarcore.git /var/lib/mock/f39-build-1522999-35979/root/chroot_tmpdir/scmroot/kf5-kcalendarcore
Cloning into '/var/lib/mock/f39-build-1522999-35979/root/chroot_tmpdir/scmroot/kf5-kcalendarcore'...
$ git fetch origin c23408fdb4bfdca5b570facfd715f4d9ca63c89b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcalendarcore
 * [new ref]         c23408fdb4bfdca5b570facfd715f4d9ca63c89b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c23408f 5.111.0