$ git clone -n https://src.fedoraproject.org/rpms/oxygen-sounds.git /var/lib/mock/f40-build-2243266-53669/root/chroot_tmpdir/scmroot/oxygen-sounds
Cloning into '/var/lib/mock/f40-build-2243266-53669/root/chroot_tmpdir/scmroot/oxygen-sounds'...
$ git fetch origin 343db65befafdb427fc2e12be463baf839d25c82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/oxygen-sounds
 * [new ref]         343db65befafdb427fc2e12be463baf839d25c82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 343db65 5.92.0