$ git clone -n https://src.fedoraproject.org/rpms/aerc.git /var/lib/mock/f38-build-709743-92980/root/chroot_tmpdir/scmroot/aerc
Cloning into '/var/lib/mock/f38-build-709743-92980/root/chroot_tmpdir/scmroot/aerc'...
$ git fetch origin ae2f87e58ddecbc02eb53fee429e8cf3a8604489:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aerc
 * [new ref]         ae2f87e58ddecbc02eb53fee429e8cf3a8604489 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae2f87e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild