$ git clone -n https://src.fedoraproject.org/rpms/idris.git /var/lib/mock/f39-build-1854526-42388/root/chroot_tmpdir/scmroot/idris
Cloning into '/var/lib/mock/f39-build-1854526-42388/root/chroot_tmpdir/scmroot/idris'...
$ git fetch origin 50bf9be8635b706c0a0e914cea3fd68b31f99f11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/idris
 * [new ref]         50bf9be8635b706c0a0e914cea3fd68b31f99f11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50bf9be bump upper bounds