$ git clone -n https://src.fedoraproject.org/rpms/libkdepim.git /var/lib/mock/f45-build-16417-486/root/chroot_tmpdir/scmroot/libkdepim
Cloning into '/var/lib/mock/f45-build-16417-486/root/chroot_tmpdir/scmroot/libkdepim'...
$ git fetch origin f8decf450b5c7cc4f399ff9052c03688f08a98fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkdepim
 * [new ref]         f8decf450b5c7cc4f399ff9052c03688f08a98fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8decf4 26.08.1