$ git clone -n https://src.fedoraproject.org/rpms/python-unpaddedbase64.git /var/lib/mock/f39-build-1643888-40248/root/chroot_tmpdir/scmroot/python-unpaddedbase64
Cloning into '/var/lib/mock/f39-build-1643888-40248/root/chroot_tmpdir/scmroot/python-unpaddedbase64'...
$ git fetch origin 08db95392ad16496f0872ba9465e559245beda2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-unpaddedbase64
 * [new ref]         08db95392ad16496f0872ba9465e559245beda2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08db953 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild