$ git clone -n https://src.fedoraproject.org/rpms/fb303.git /var/lib/mock/f38-build-side-42-init-devel-1283500-30672/root/chroot_tmpdir/scmroot/fb303
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1283500-30672/root/chroot_tmpdir/scmroot/fb303'...
$ git fetch origin 3d1897c48fb5acc6ffcb1c7f58e81afab27126d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fb303
 * [new ref]         3d1897c48fb5acc6ffcb1c7f58e81afab27126d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d1897c Update to 2023.07.03.00