$ git clone -n https://src.fedoraproject.org/rpms/libolm.git /var/lib/mock/f38-build-728000-100983/root/chroot_tmpdir/scmroot/libolm
Cloning into '/var/lib/mock/f38-build-728000-100983/root/chroot_tmpdir/scmroot/libolm'...
$ git fetch origin cd0912401e32f91357e93427c04787162a868d2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libolm
 * [new ref]         cd0912401e32f91357e93427c04787162a868d2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd09124 Second attempt for fix Python buildings build.