$ git clone -n https://src.fedoraproject.org/rpms/atomes.git /var/lib/mock/f38-build-side-42-init-devel-621826-26349/root/chroot_tmpdir/scmroot/atomes
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-621826-26349/root/chroot_tmpdir/scmroot/atomes'...
$ git fetch origin 3b7fcfcde1da64725df73366b14bdd61c1158584:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/atomes
 * [new ref]         3b7fcfcde1da64725df73366b14bdd61c1158584 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b7fcfc Initial import (fedora#2130607).