$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcalendarcore.git /var/lib/mock/f40-build-2172332-51046/root/chroot_tmpdir/scmroot/kf5-kcalendarcore
Cloning into '/var/lib/mock/f40-build-2172332-51046/root/chroot_tmpdir/scmroot/kf5-kcalendarcore'...
$ git fetch origin 27d60a53dede0b3c6877f03a9a816f543c689456:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcalendarcore
 * [new ref]         27d60a53dede0b3c6877f03a9a816f543c689456 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27d60a5 5.113.0