$ git clone -n https://src.fedoraproject.org/rpms/libkml.git /var/lib/mock/f40-build-2219800-52642/root/chroot_tmpdir/scmroot/libkml
Cloning into '/var/lib/mock/f40-build-2219800-52642/root/chroot_tmpdir/scmroot/libkml'...
$ git fetch origin 36bec952d070eea91afe58f7755bdc4b3416bc9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkml
 * [new ref]         36bec952d070eea91afe58f7755bdc4b3416bc9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36bec95 Fix flatpak build